AU2008263982A1

AU2008263982A1 - Piperazine and [1,4] diazepan derivatives as NK antagonists

Info

Publication number: AU2008263982A1
Application number: AU2008263982A
Authority: AU
Inventors: Henner Knust; Matthias Nettekoven; Hasane Ratni; Xihan Wu
Original assignee: F Hoffmann La Roche AG
Current assignee: F Hoffmann La Roche AG
Priority date: 2007-06-13
Filing date: 2008-06-04
Publication date: 2008-12-18
Anticipated expiration: 2028-06-04
Also published as: US20080312216A1; CN101679457B; IL202278A0; EP2167509A1; JP2010529158A; CA2690299A1; KR20100023957A; BRPI0814253A2; AU2008263982B2; CN101679457A; KR101177977B1; WO2008151969A1; US7592345B2; MX2009013186A

Description

WO 2008/151969 PCT/EP2008/056878 -1 Case 24274 PIPERAZINE AND [1,41 DIAZEPAN DERIVATIVES AS NK ANTAGONISTS The present invention relates to a compound of formula I R O0- R1 O, 40 0,2 N', 0 (R N R Nj R (R )m R 2 N Re-N 0 R-N 0 3 %3 R IA or R IB wherein 5 R' is hydrogen or lower alkyl; R2 is hydrogen, fluoro, hydroxy or lower alkyl; R 3 is hydrogen or lower alkyl; R4 is -CHR 5 -A R 5 is hydrogen, lower alkyl, fluoro, CF 3 , CH 2 OH or cycloalkyl; 10 A is aryl or heteroaryl, which rings are unsubstituted or substituted by (R 6

)

o ; R6 may be the same or not when o is more than one, and is heteroaryl, lower alkyl, lower alkoxy, cyano, halogen, lower alkyl substituted by halogen, lower alkoxy substituted by halogen or NR Re; o is 1, 2 or 3; 15 R 7 , R 8 are independently hydrogen or lower alkyl;

R

9 is lower alkyl; R 1 is lower alkyl, lower alkoxy or halogen; n is 1 or 2; m is 1 or 2; 20 or to a pharmaceutically suitable acid addition salt thereof. The invention includes all sterioisomeric forms, including individual diastereoisomers and enantiomers of the compound of formula (I) as well as racemic and non-racemic mixtures thereof. It has been found that the present compounds are high potential NK-3 25 receptor antagonists for the treatment of depression, pain, psychosis, Parkinson's disease, schizophrenia, anxiety and attention deficit hyperactivity disorder (ADHD).

WO 2008/151969 PCT/EP2008/056878 -2 The three main mammalian tachykinins, substance P (SP), neurokinin A (NKA) and neurokinin B (NKB) belong to the family of neuropeptides sharing the common COOH-terminal pentapeptide sequence of Phe-X-Gly-Leu-Met-NH 2 . As neurotransmitters, these peptides exert their biological activity via three distinct 5 neurokinin (NK) receptors termed as NK-1, NK-2 and NK-3. SP binds preferentially to the NK- 1 receptor, NKA to the NK-2 and NKB to the NK-3 receptor. The NK-3 receptor is characterized by a predominant expression in CNS and its involvement in the modulation of the central monoaminergic system has been shown. These properties make the NK-3 receptor a potential target for central nervous system 10 disorders such as anxiety, depression, bipolar disorders, Parkinson's disease, schizophrenia and pain (Neurosci. Letters, 2000, 283, 185 -188; Exp. Opin. Ther. Patents 2000, 10, 939-960; Neuroscience, 1996, 74, 403 -414; Neuropeptides, 1998, 32, 481-488). Schizophrenia is one of the major neuropsychiatric disorders, characterized by 15 severe and chronic mental impairment. This devastating disease affects about 1 % of the world's population. Symptoms begin in early adulthood and are followed by a period of interpersonal and social dysfunction. Schizophrenia manifests as auditory and visual hallucinations, paranoia, delusions (positive symptoms), blunted affect, depression, anhedonia, poverty of speech, memory and attention deficits as well as social withdrawal 20 (negative symptoms). For decades scientists and clinicians have made efforts with the aim of discovering an ideal agent for the pharmacological treatment of schizophrenia. However, the complexity of the disorders, due to a wide array of symptoms, has hampered those efforts. There are no specific focal characteristics for the diagnosis of schizophrenia and 25 no single symptom is consistently present in all patients. Consequently, the diagnosis of schizophrenia as a single disorder or as a variety of different disorders has been discussed but not yet resolved. The major difficulty in the development of a new drug for schizophrenia is the lack of knowledge about the cause and nature of this disease. Some neurochemical hypotheses have been proposed on the basis of pharmacological studies to 30 rationalize the development of a corresponding therapy: the dopamine, the serotonin and the glutamate hypotheses. But taking into account the complexity of schizophrenia, an appropriate multireceptor affinity profile might be required for efficacy against positive and negative signs and symptoms. Furthermore, an ideal drug against schizophrenia would preferably have a low dosage allowing once-per-day dosage, due to the low 35 adherence of schizophrenic patients. In recent years clinical studies with selective NK1 and NK2 receptor antagonists appeared in the literature showing results for the treatment of emesis, WO 2008/151969 PCT/EP2008/056878 -3 depression, anxiety, pain and migraine (NK1) and asthma (NK2 and NK1). The most exciting data were produced in the treatment of chemotherapy-induced emesis, nausea and depression with NK1 and in asthma with NK2- receptor antagonists. In contrast, no clinical data on NK3 receptor antagonists have appeared in the literature until 2000. 5 Osanetant (SR 142,801) from Sanofi-Synthelabo was the first identified potent and selective non-peptide antagonist described for the NK3 tachykinin receptor for the potential treatment of schizophrenia, which was reported in the literature (Current Opinion in Investigational Drugs, 2001,2(7), 950-956 and Psychiatric Disorders Study 4, Schizophrenia, June 2003, Decision Recources, Inc., Waltham, Massachusetts). The 10 proposed drug SR 142,801 has been shown in a phase II trial as active on positive symptoms of schizophrenia, such as altered behaviour, delusion, hallucinations, extreme emotions, excited motor activity and incoherent speech, but inactive in the treatment of negative symptoms, which are depression, anhedonia, social isolation or memory and attention deficits. 15 The neurokinin-3 receptor antagonists have been described as useful in pain or inflammation, as well as in schizophrenia, Exp. Opinion. Ther. Patents (2000), 10(6), 939-960 and Current Opinion in Investigational Drugs, 2001, 2(7), 950-956 956 and Psychiatric Disorders Study 4, Schizophrenia, June 2003, Decision Recources, Inc., Waltham, Massachusetts). 20 Objects of the present invention are novel compounds of formula I, their manufacture, medicaments based on a compound in accordance with the invention and their production as well as the use of compounds of formula I in the control or prevention of illnesses such as depression, pain, bipolar disorders, psychosis, Parkinson's disease, schizophrenia, anxiety and attention deficit hyperactivity disorder (ADHD). 25 The preferred indications using the compounds of the present invention are depression, psychosis, Parkinson's disease, schizophrenia, anxiety and attention deficit hyperactivity disorder (ADHD). The following definitions of the general terms used in the present description apply irrespective of whether the terms in question appear alone or in combination. 30 As used herein, the term "lower alkyl" denotes a straight- or branched-chain alkyl group containing from 1-8 carbon atoms, for example, methyl, ethyl, propyl, isopropyl, n-butyl, i-butyl, t-butyl and the like. Preferred lower alkyl groups are groups with 1-4 carbon atoms. The term "lower alkyl substituted by halogen" denotes an alkyl group as defined 35 above, wherein at least one hydrogen atom is replaced by halogen, for example -CF 3

,

WO 2008/151969 PCT/EP2008/056878 -4

-CHF

2 , -CH 2 F, -CH 2

CF

3 , -CH 2

CH

2

CF

3 , -CH 2

CF

2

CF

3 and the like. Preferred lower alkyl substituted by halogen groups are groups having 1-4 carbon atoms. The term "lower alkoxy" denotes a group wherein the alkyl residue is as defined above and which is attached via an oxygen atom, for example, methoxy, ethoxy, propoxy, 5 isopropoxy, n-butoxy, i-butoxy, 2-butoxy, t-butoxy and the like. Preferred alkoxy groups are groups with 1-4 carbon atoms. The term "lower alkoxy substituted by halogen" denotes a group wherein the alkyl residue is as defined above "lower alkyl substituted by halogen" and which is attached via an oxygen atom. Preferred lower alkoxy substituted by halogen groups are groups having 10 1-4 carbon atoms. The term "halogen" denotes chlorine, iodine, fluorine and bromine. The term "cycloalkyl" denotes a saturated carbon ring containing from 3-7 carbon atoms, for example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and the like. 15 The term "aryl" denotes a cyclic aromatic hydrocarbon radical consisting of one or more fused rings containing 6-14 carbon atoms in which at least one ring is aromatic in nature, for example phenyl, benzyl, naphthyl or indanyl. Preferred is the phenyl group. The term "heteroaryl" denotes a cyclic aromatic hydrocarbon radical consisting of one or more fused rings containing 3-14 ring atoms, preferably containing 5-10 ring 20 atoms, in which at least one ring is aromatic in nature, and which contains at least one heteroatom, selected from N, 0 or S, for example quinoxalinyl, dihydroisoquinolinyl, pyrazinyl, pyrazolyl, pyridinyl, pyridyl, pyrimidyl, oxadiazolyl, triazolyl, tetrazolyl, thiazolyl, thiadiazolyl, thienyl, furyl or imidazolyl. Preferred heteroaryl group is quinoxalinyl or pyridinyl. 25 The term "pharmaceutically acceptable acid addition salt" embraces salts with inorganic and organic acids, such as hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, citric acid, formic acid, fumaric acid, maleic acid, acetic acid, succinic acid, tartaric acid, methanesulfonic acid, p-toluenesulfonic acid and the like. The following groups of compounds of formula IA are preferred: 30 - A compound of formula IA, wherein n is 1. - A compound of formula IA, wherein R 2 is lower alkyl. - A compound of formula IA, wherein R 3 is hydrogen or lower alkyl and R 4 is WO 2008/151969 PCT/EP2008/056878 5 -CHR -A. Preferably A is an optionally substituted aryl, and particularly A is an optionally substituted phenyl. The following compounds relate to this group. N-(4-chloro-benzyl) -2-(3,4-dichloro-phenyl) -4-(4-methanesulfonyl-piperazin- 1 -yl) 5 2,N-dimethyl-butyramide, 2-(3,4-dichloro-phenyl) -N-(3-fluoro-4-trifluoromethyl-benzyl) -4-(4-methanesulfonyl piperazin- 1 -yl) -2-methyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 yl) -2-methyl-butyramide, 10 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 -yl) -2,N-dimethyl-N- (4 methyl-benzyl) -butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 -yl) -2-methyl-N- (4 trifluoromethyl-benzyl) -butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 -yl) -2,N-dimethyl-N- (4 15 trifluoromethyl-benzyl) -butyramide, N- (4-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 -yl) -2 methyl-butyramide, N- [cyclopropyl- (4-methoxy-phenyl) -methyl] -2- (3,4-dichloro-phenyl) -4- ((R) -4 methanesulfonyl-3 -methyl-piperazin- 1 -yl) -2-methyl-butyramide, 20 2- (3,4-dichloro-phenyl) -N- (4-fluoro-3-trifluoromethyl-benzyl) -4- ((R) -4 methanesulfonyl-3 -methyl-piperazin- 1 -yl) -2,N-dimethyl-butyramide, N- (3,5-bis-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl 3 -methyl-piperazin- 1 -yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- 1 -yl) -2,N 25 dimethyl-N- (4-methyl-benzyl) -butyramide, N- (4-chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4 methanesulfonyl-3 -methyl-piperazin- 1 -yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (3-fluoro-4-trifluoromethyl-benzyl) -4- ((R) -4 methanesulfonyl-3 -methyl-piperazin- 1 -yl) -2,N-dimethyl-butyramide, 30 N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- 1 -yl) -2,N-dimethyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- 1 -yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (3-difluoromethoxy-benzyl) -4- ((R) -4-methanesulfonyl-3 35 methyl-piperazin- 1 -yl) -2-methyl-butyramide, WO 2008/151969 PCT/EP2008/056878 -6 2-(3,4-dichloro-phenyl) -4-((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2-methyl N- (4-trifluoromethyl-benzyl) -butyramide, 2- (3,4-dichloro-phenyl) -N- (2-fluoro-5-trifluoromethyl-benzyl) -4- ((R) -4 methanesulfonyl-3 -methyl-piperazin- 1-yl) -2-methyl-butyramide, 5 N-[1- (4-chloro-phenyl) -ethyl] -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3 methyl-piperazin- 1-yl) -2-methyl-butyramide, N- (2-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- 1-yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -N-[1- (3,4-dichloro-phenyl) -ethyl] -4- ((R) -4-methanesulfonyl 10 3-methyl-piperazin- 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2-methyl N- (3-trifluoromethoxy-benzyl) -butyramide, N- (4-chloro-3-fluoro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3 methyl-piperazin- 1-yl) -2-methyl-butyramide, 15 2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2-methyl N- (4-trifluoromethoxy-benzyl) -butyramide, N- (4-chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4 methanesulfonyl-3 -methyl-piperazin- 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2,N 20 dimethyl-N- (4-trifluoromethyl-benzyl) -butyramide, N- (4-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- 1-yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2,N dimethyl-N- (3-trifluoromethyl-benzyl) -butyramide, 25 N- [cyclopropyl- (4-methoxy-phenyl) -methyl] -2- (3,4-dichloro-phenyl) -4- ((S) -4 methanesulfonyl-3-methyl-piperazin- 1 -yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (4-fluoro-3-trifluoromethyl-benzyl) -4- ((S) -4 methanesulfonyl-3-methyl-piperazin- 1 -yl) -2,N-dimethyl-butyramide, N- (3,5-bis-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl 30 3-methyl-piperazin- 1 -yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl-piperazin- 1 -yl) -2,N dimethyl-N- (4-methyl-benzyl) -butyramide, N- (4-chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4 methanesulfonyl-3 -methyl-piperazin- 1 -yl) -2,N-dimethyl-butyramide, 35 2- (3,4-dichloro-phenyl) -N- (3-fluoro-4-trifluoromethyl-benzyl) -4- ((S) -4 methanesulfonyl-3 -methyl-piperazin- 1 -yl) -2,N-dimethyl-butyramide, WO 2008/151969 PCT/EP2008/056878 -7 N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl piperazin- l-yl) -2,N-dimethyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl piperazin- l-yl) -2-methyl-butyramide, 5 2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl-piperazin- l-yl) -2-methyl N- (4-trifluoromethyl-benzyl) -butyramide, N-[1- (4-chloro-phenyl) -ethyl] -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3 methyl-piperazin- l-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -N-[I- (3,4-dichloro-phenyl) -ethyl] -4- ((S) -4-methanesulfonyl 10 3-methyl-piperazin- l-yl) -2-methyl-butyramide, N- (4-chloro-3-fluoro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3 methyl-piperazin- l-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl-piperazin- l-yl) -2-methyl N- (4-trifluoromethoxy-benzyl) -butyramide, 15 N- (4-chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4 methanesulfonyl-3 -methyl-piperazin- l-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl-piperazin- l-yl) -2,N dimethyl-N- (4-trifluoromethyl-benzyl) -butyramide, N- (4-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl 20 piperazin- l-yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl-piperazin- l-yl) -2,N dimethyl-N- (3-trifluoromethyl-benzyl) -butyramide, (S) -N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3 methyl-piperazin- l-yl) -2-methyl-butyramide, 25 (R) -N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3 methyl-piperazin- l-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- l-yl) -2,N-dimethyl-N- (3 trifluoromethyl-benzyl) -butyramide, (R or S) -2- (3,4-dichloro-phenyl) -N- ((R) -2-hydroxy- 1 -phenyl-ethyl) -4- (4 30 methanesulfonyl-piperazin-1-yl)-2-methyl-butyramide or N- [(R) -1- (4-chloro-phenyl) -2-hydroxy-ethyl] -2- (3,4-dichloro-phenyl) -4- (4 methanesulfonyl-piperazin- 1-yl) -2-methyl-butyramide. Preferred are further compounds of formula IA, wherein n is 2. The following compounds relate to this group. 35 2- (3,4-dichloro-phenyl) -N- (3-fluoro-4-trifluoromethyl-benzyl) -4- (4-methanesulfonyl [1,4]diazepan-1-yl)-2-methyl-butyramide, WO 2008/151969 PCT/EP2008/056878 -8 2-(3,4-dichloro-phenyl) -4-(4-methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl-N-(4 trifluoromethyl-benzyl) -butyramide, N- (4-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 yl) -2,N-dimethyl-butyramide, 5 N- (4-chloro-3-fluoro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl [1,4]diazepan-1-yl)-2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (3-fluoro-benzyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl-N- (3 10 trifluoromethyl-benzyl) -butyramide, N- (3-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (3-fluoro-4-methoxy-benzyl) -4- (4-methanesulfonyl [1,4] diazepan- 1-yl) -2,N-dimethyl-butyramide, 15 2- (3,4-dichloro-phenyl) -N- (4-fluoro-3-trifluoromethyl-benzyl) -4- (4-methanesulfonyl [1,4] diazepan- 1-yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (4-difluoromethoxy-3-methoxy-benzyl) -4- (4 methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl-N- (4 20 methyl-benzyl) -butyramide, N- (4-chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl [1,4] diazepan- 1-yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (3 -fluoro-4-trifluoromethyl-benzyl) -4- (4-methanesulfonyl [1,4] diazepan- 1-yl) -2,N-dimethyl-butyramide, 25 N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 1-yl) -2,N-dimethyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2-methyl-N- (4 30 trifluoromethyl-benzyl) -butyramide, N- (2-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -N- [1- (3,4-dichloro-phenyl) -ethyl] -4- (4-methanesulfonyl [1,4]diazepan-1-yl)-2-methyl-butyramide, 35 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 -yl) -2,N-dimethyl-N- (4 pyridin-4-yl-benzyl) -butyramide.

WO 2008/151969 PCT/EP2008/056878 -9 The following groups of compounds of formula IB are preferred: - A compound of formula IB, wherein n is 1. - A compound of formula IB, wherein R 2 is lower alkyl. - A compound of formula IB, wherein R 3 is hydrogen or lower alkyl and R 4 is 5 -CHR 5-A. Preferably A is an optionally substituted aryl, and particularly A is an optionally substituted phenyl, for example the following compounds N- [(R) -1-(4-chloro-phenyl) -2-hydroxy-ethyl] -2-(3,4-dichloro-phenyl)-4-(1,1 -dioxo hexahydro-1 6 -thia-5,7a-diaza-inden-5-yl)-2-methyl-butyramide or 2-(3,4-dichloro-phenyl)-4-(1,1-dioxo-hexahydro-1X-thia-5,7a-diaza-inden-5-yl)-N 10 [(R) -1- (4-fluoro-phenyl) -2-hydroxy-ethyl] -2-methyl-butyramide. A further embodiment of the invention are compounds of formula CI 0 RN R\ R N 0 14 R IA-I wherein R I is hydrogen or lower alkyl; 15 R 2 is hydrogen, fluoro or lower alkyl; R 3 is hydrogen or lower alkyl; R4 is -CHR 5 -A

R

5 is hydrogen, lower alkyl, fluoro, CF 3 , CH 2 OH or cycloalkyl; A is aryl or heteroaryl, which rings are unsubstituted or substituted by (R 6 ),; 20 R6 may be the same or not when o is more than one, and is heteroaryl, lower alkyl, lower alkoxy, cyano, halogen, lower alkyl substituted by halogen, lower alkoxy substituted by halogen or NR 7

R

8 ; o is 1, 2 or 3;

R

7 , R 8 are independently hydrogen or lower alkyl; and 25 n is 1 or 2; or a pharmaceutically suitable acid addition salt thereof. The preparation of compounds of formula I of the present invention may be carried out in sequential or convergent synthetic routes. Syntheses of the compounds of the invention are shown in the following scheme. The skills required for carrying out the 30 reaction and purification of the resulting products are known to those skilled in the art.

WO 2008/151969 PCT/EP2008/056878 - 10 The substituents and indices used in the following description of the processes have the significance given herein before unless indicated to the contrary. In more detail, the compounds of formula I can be manufactured by the methods given below, by the methods given in the examples or by analogous methods. 5 Appropriate reaction conditions for the individual reaction steps are known to a person skilled in the art. The reaction sequence is not limited to the one displayed in scheme 1, however, depending on the starting materials and their respective reactivity the sequence of reaction steps can be freely altered. Starting materials are either commercially available or can be prepared by methods analogous to the methods given below, by methods 10 described in references cited in the description or in the examples, or by methods known in the art. The present compounds of formula I and their pharmaceutically acceptable salts can be prepared by processes described below, which process comprises - cleaving off the ester group from a compound of formula 10 2 9 10 2 (R )m R N () ( )( ) N, oNo, 0 0 0 0 15 ' IV A or IV B with aqueous bases, for example with NaOH or LiOH, and - converting the acid of formula R4 O 10 R4 0 0 1 0 N 2 N 9o 2 N (R )M R N j R (R )m R N )n~ )n HO 0 VIII A HO 0 VIII B with a respective amine of formula R3-N 20 H Ix under coupling conditions to a compound of formula WO 2008/151969 PCT/EP2008/056878 - 11 R1 1"S0 R4 O 0

R

1 0 2 10 2 N-S (R )m R N j R (R )m R N Re-N 0 Re-N 0 3 % 3 R IAor R IB wherein the substituents and n have same meanings as described above, and R' is an 0 protecting group, such as alkyl (e.g. methyl) or aryl (e.g. phenyl), and 5 - if desired, converting the compounds obtained into pharmaceutically acceptable acid addition salts. The process is described in scheme 1 and scheme 2 in more detail. The preparation of compounds of formula I of the present invention may be carried out in sequential or convergent synthetic routes. Syntheses of the compounds of 10 the invention are shown in the following schemes. The skills required for carrying out the reaction and purification of the resulting products are known to those skilled in the art. The substituents and indices used in the following description of the processes have the significance given herein before unless indicated to the contrary. In more detail, the compounds of formula I can be manufactured by the methods 15 given below, by the methods given in the examples or by analogous methods. Appropriate reaction conditions for the individual reaction steps are known to a person skilled in the art. The reaction sequence is not limited to the one displayed in schemes 1 or 2, however, depending on the starting materials and their respective reactivity the sequence of reaction steps can be freely altered. Starting materials are either commercially 20 available or can be prepared by methods analogous to the methods given below, by methods described in references cited in the description or in the examples, or by methods known in the art. 25 WO 2008/151969 PCT/EP2008/056878 - 12 Scheme 1 1 9% R 10 10 N 2 )N ") (RR R (R( a 1 IVA o1 of 0 0 b) 0 H ill f c) O O IvB 10 10R (RR)mRR RR) R9 (R4)m R B~' (R)m R R' (R 1 m / O)1(")mOH ) ( o forR2=NOH I~ IVV 'Bl RR 100 (R0 m 0 10) 1 0 2 VIII RO a RO~ 0 RO00 o R9 O 5R1 7 S% WO 2008/151969 PCT/EP2008/056878 - 13 The substituents and n have same meanings as described above, and R' is an 0 protecting group, such as alkyl (e.g. methyl) and aryl (e.g. phenyl)] a) Phenylacetic acid ester derivatives II are commercially available or can be accessed by methods described in literature. 5 Reaction of ester derivatives II with protected bromo alkyl aldehydes (either commercially available or synthetically accessible by methods known in the art) under basic conditions lead to aldehyde derivatives III as described analogously in literature (for reaction conditions described in literature affecting such reactions see for example: Comprehensive Organic Transformations: A Guide to Functional Group Preparations, 2nd 10 Edition, Richard C. Larock. John Wiley & Sons, New York, NY. 1999). However, it is convenient to react ester derivative II with the respective protected bromo alkyl aldehyde (commercially available or accessible by methods known) in the presence of a base and a solvent. There is no particular restriction on the nature of the solvent to be employed, provided that it has no adverse effect on the reaction or the reagents involved and that it 15 can dissolve the reagents, at least to some extent. Examples for suitable solvents include dimethylformamide (DMF), tetrahydrofuran (THF) and the like. There is no particular restriction on the nature of the base used in this stage, and any base commonly used in this type of reaction may equally be employed here. Examples of such bases include NaH and the like. The reaction can take place over a wide range of temperatures, and the 20 precise reaction temperature is not critical to the invention. It is convenient to carry out the reaction with heating from ambient temperature to reflux. The time required for the reaction may also vary widely, depending on many factors, notably the reaction temperature and the nature of the reagents. However, a period of from 0.5 h to several days will usually suffice to yield the aldehyde protected intermediate which can be 25 subjected to acidic cleavage of the protecting group in the presence of a solvent. There is no particular restriction on the nature of the solvent to be employed, provided that it has no adverse effect on the reaction or the reagents involved and that it can dissolve the reagents, at least to some extent. Examples for suitable solvents include tetrahydrofuran (THF) and the like. There is no particular restriction on the nature of the acid used in this 30 stage, and any acid commonly used in this type of reaction may equally be employed here. Examples of such acid include HCl and the like. The reaction can take place over a wide range of temperatures, and the precise reaction temperature is not critical to the invention. It is convenient to carry out the reaction with heating from ambient temperature to reflux. The time required for the reaction may also vary widely, depending 35 on many factors, notably the reaction temperature and the nature of the reagents. However, a period of from 0.5 h to several days will usually suffice to yield aldehyde WO 2008/151969 PCT/EP2008/056878 - 14 derivatives III. Additionally, the protected aldehyde derivative can further be reacted to introduce R 2 =alkyl. For reaction conditions described in literature affecting such reactions see for example: Comprehensive Organic Transformations: A Guide to Functional Group Preparations, 2nd Edition, Richard C. Larock. John Wiley & Sons, New York, NY. 5 1999). However, it is convenient to react the protected aldehyde intermediate with an electophile ain the presence of a base and a solvent. There is no particular restriction on the nature of the solvent to be employed, provided that it has no adverse effect on the reaction or the reagents involved and that it can dissolve the reagents, at least to some extent. Examples for suitable solvents include dimethylformamide (DMF), 10 tetrahydrofuran (THF) and the like. There is no particular restriction on the nature of the base used in this stage, and any base commonly used in this type of reaction may equally be employed here. Examples of such bases include NaH and the like. The reaction can take place over a wide range of temperatures, and the precise reaction temperature is not critical to the invention. It is convenient to carry out the reaction with heating from 15 ambient temperature to reflux. The time required for the reaction may also vary widely, depending on many factors, notably the reaction temperature and the nature of the reagents. However, a period of from 0.5 h to several days will usually suffice to yield the aldehyde protected intermediate which then can be subjected to acidic cleavage of the protecting group. The order of reaction of phenyl acetic acid derivatives consecutively 20 with two suitable electrophiles can be chosen freely according to the reactivity of the reagents and compounds. b) Reductive aminations are widely described in literature (for reaction conditions described in literature affecting such reactions see for example: Comprehensive Organic Transformations: A Guide to Functional Group Preparations, 2nd Edition, Richard C. 25 Larock. John Wiley & Sons, New York, NY. 1999). However, we find it convenient to transform aldehyde derivative III with (homo) piperazine derivatives (Journal of Medicinal Chemistry (1983), 26(5), 657-61) under reductive conditions in the presence of a solvent to afford ester derivatives IV A or IV B. There is no particular restriction on the nature of the solvent to be employed, provided that it has no adverse effect on the 30 reaction or the reagents involved and that it can dissolve the reagents, at least to some extent. Examples for suitable solvents include tetrahydrofuran (THF) and the like. There is no particular restriction on the nature of the reducing agent used in this stage, and any reducing agent commonly used in this type of reaction may equally be employed here. Examples of such reducing agents include sodium triacetoxyborohydride and the like. 35 The reaction can take place over a wide range of temperatures, and the precise reaction temperature is not critical to the invention. It is convenient to carry out the reaction with WO 2008/151969 PCT/EP2008/056878 - 15 heating from ambient temperature to reflux. The time required for the reaction may also vary widely, depending on many factors, notably the reaction temperature and the nature of the reagents. However, a period of from 0.5 h to several days will usually suffice to yield ester derivative IV. 5 c) Reaction of ester derivatives II with hydroxy-protected alkyl halides (either commercially available or synthetically accessible by methods known in the art) under basic conditions lead upon cleavage of the hydroxyl protecting group to lactones V as described in literature (for reaction conditions described in literature affecting such reactions see for example: Comprehensive Organic Transformations: A Guide to Functional 10 Group Preparations, 2nd Edition, Richard C. Larock. John Wiley & Sons, New York, NY. 1999). However, it is convenient to react ester derivative II with 2-(2-bromoethoxy) tetrahydro-2-H-pyrane (commercially available in the presence of a base and a solvent. There is no particular restriction on the nature of the solvent to be employed, provided that it has no adverse effect on the reaction or the reagents involved and that it can 15 dissolve the reagents, at least to some extent. Examples for suitable solvents include dimethylformamide (DMF), tetrahydrofuran (THF) and the like. There is no particular restriction on the nature of the base used in this stage, and any base commonly used in this type of reaction may equally be employed here. Examples of such bases include NaH and the like. The reaction can take place over a wide range of temperatures, and the 20 precise reaction temperature is not critical to the invention. It is convenient to carry out the reaction with heating from ambient temperature to reflux. The time required for the reaction may also vary widely, depending on many factors, notably the reaction temperature and the nature of the reagents. However, a period of from 0.5 h to several days will usually suffice to yield the hydroxy protected intermediate which can be 25 subjected to acidic cleavage of the protecting group in the presence of a solvent. There is no particular restriction on the nature of the solvent to be employed, provided that it has no adverse effect on the reaction or the reagents involved and that it can dissolve the reagents, at least to some extent. Examples for suitable solvents include dimethylformamide (DMF), tetrahydrofuran (THF) and the like. There is no particular 30 restriction on the nature of the acid used in this stage, and any acid commonly used in this type of reaction may equally be employed here. Examples of such acid include HCl and the like. The reaction can take place over a wide range of temperatures, and the precise reaction temperature is not critical to the invention. It is convenient to carry out the reaction with heating from ambient temperature to reflux. The time required for the 35 reaction may also vary widely, depending on many factors, notably the reaction WO 2008/151969 PCT/EP2008/056878 - 16 temperature and the nature of the reagents. However, a period of from 0.5 h to several days will usually suffice to yield lactone derivatives V. d) Lactone derivatives V can conveniently be transferred into the respective substituted lactone derivatives VI by reaction of lactone V with an electrophile in the presence of a 5 base in the the presence of a solvent. There is no particular restriction on the nature of the solvent to be employed, provided that it has no adverse effect on the reaction or the reagents involved and that it can dissolve the reagents, at least to some extent. Examples for suitable solvents include dimethylformamide (DMF), tetrahydrofuran (THF) and the like. There is no particular restriction on the nature of the base used in this stage, and any 10 base commonly used in this type of reaction may equally be employed here. Examples of such bases include NaH and the like. The reaction can take place over a wide range of temperatures, and the precise reaction temperature is not critical to the invention. It is convenient to carry out the reaction with heating from ambient temperature to reflux. The time required for the reaction may also vary widely, depending on many factors, 15 notably the reaction temperature and the nature of the reagents. However, a period of from 0.5 h to several days will usually suffice to yield lactone derivatives VI. e) Lactone derivative VI can conveniently transferred into the respective ester derivative VII by a two step reaction sequence. Any commonly used synthetic sequence is applicable however, we find it convenient to open the lactone derivative VII with HBr in the 20 presence of an acid. Any commonly used acid which in combination with HBr affects such a reaction can be used. Examples of such acids include acetic acid and the like. The reaction can take place over a wide range of temperatures, and the precise reaction temperature is not critical to the invention. It is convenient to carry out the reaction with heating from ambient temperature to reflux. The time required for the reaction may also 25 vary widely, depending on many factors, notably the reaction temperature and the nature of the reagents. However, a period of from 0.5 h to several days will usually suffice to yield the intermediately built acid derivative which is subjected to esterification conditions. Common procedures are described in literature, however, we find it convenient to transform the intermediately built acid into the respective ester derivative VII by reaction 30 with SOCl 2 in methanol. The reaction can take place over a wide range of temperatures, and the precise reaction temperature is not critical to the invention. It is convenient to carry out the reaction with heating from ambient temperature to reflux. The time required for the reaction may also vary widely, depending on many factors, notably the reaction temperature and the nature of the reagents. However, a period of from 0.5 h to 35 several days will usually suffice to yield ester derivative VII.

WO 2008/151969 PCT/EP2008/056878 - 17 f) Transformation of ester derivative VII with (homo) piperazine derivatives (described in literature: see for instance Journal of Medicinal Chemistry (1983), 26(5), 657-61) to access (homo) piperazine derivatives IV A or IV B ca be affected by any commonly used procedure. However, we find it convenient to react ester derivative VII with (homo) 5 piperazine derivatives in the presence of a solvent and a base. There is no particular restriction on the nature of the solvent to be employed, provided that it has no adverse effect on the reaction or the reagents involved and that it can dissolve the reagents, at least to some extent. Examples for suitable solvents include dimethylformamide (DMF), tetrahydrofuran (THF) and the like. There is no particular restriction on the nature of the 10 base used in this stage, and any base commonly used in this type of reaction may equally be employed here. Examples of such bases include DIPEA, NEt 3 and the like. The reaction can take place over a wide range of temperatures, and the precise reaction temperature is not critical to the invention. It is convenient to carry out the reaction with heating from ambient temperature to reflux. The time required for the reaction may also 15 vary widely, depending on many factors, notably the reaction temperature and the nature of the reagents. However, a period of from 0.5 h to several days will usually suffice to yield (homo) piperazine derivatives IV A or IV B. g) Transformation of (homo) piperazine derivatives IV A or IV B into the final amide derivatives can be done according to procedures described in literature. However, we find 20 it convenient to employ a two step reaction sequence in which the ester functionality in IV A or IV B is cleaved under aqueous basic conditions and the liberated acid functionality functionality converted with the respective amines under coupling conditions and to the (homo) piperazine derivatives IA or IB. There is no particular restriction on the nature of the aqueous base to be employed, provided that it has no 25 adverse effect on the reaction or the reagents involved and that it can dissolve the reagents, at least to some extent. Examples for suitable aqueous bases include NaOH, LiOH and the like. Any commonly used co-solvent can be employed. Examples include THF and the like. The coupling of carboxylic acids with amines is widely described in literature and the procedures are known to those in the art (For reaction conditions 30 described in literature affecting such reactions see for example: Comprehensive Organic Transformations: A Guide to Functional Group Preparations, 2nd Edition, Richard C. Larock. John Wiley & Sons, New York, NY. 1999). The intermediately built acid can conveniently be transformed to the respective amide through coupling with an amine (either commercially available or accessible by methods described in references or by 35 methods known in the art; as appropriate) by employing the usage of coupling reagents. For example coupling reagents like NN'-carbonyldiimidazole (CDI), NN'- WO 2008/151969 PCT/EP2008/056878 - 18 dicyclohexylcarbodiimide (DCC), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDCI), 1-[bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5 b] pyridinium-3 -oxide hexafluorophosphate (HATU), 1-hydroxy-1,2,3-benzotriazole (HOBT), O-benzotriazol- 1 -yl-N,N,N',N'-tetramethyluronium tetrafluoroborate (TBTU) 5 and the like can equally well be employed to affect such transformation. We find it convenient to carry out the reaction in a solvent like dimethylformamide (DMF) and in the presence of a base. There is no particular restriction on the nature of the solvent to be employed, provided that it has no adverse effect on the reaction or the reagents involved and that it can dissolve the reagents, at least to some extent. Examples for suitable 10 solvents include: DMF, dichloromethane (DCM), dioxane, THF, and the like. There is no particular restriction on the nature of the base used in this stage, and any base commonly used in this type of reaction may equally be employed here. Examples of such bases include triethylamine and diisopropylethylamine, and the like. The reaction can take place over a wide range of temperatures, and the precise reaction temperature is not 15 critical to the invention. We find it convenient to carry out the reaction with heating from ambient temperature to reflux. The time required for the reaction may also vary widely, depending on many factors, notably the reaction temperature and the nature of the reagents. However, a period of from 0.5 h to several days will usually suffice to yield (homo) piperazine derivatives I A or I B. 20 h) Pyruvate derivatives VIII are commercially available or can be synthesised by methods decribed in literature (For reaction conditions see for example: Comprehensive Organic Transformations: A Guide to Functional Group Preparations, 2nd Edition, Richard C. Larock. John Wiley & Sons, New York, NY. 1999). However we find it conventient to react pyruvate derivative VIII with allyl bromide and indium (0) in analogy to the procedure 25 described in Synthetic Communications 2001, 3189-3196 to yield hydroxy-ester derivatives IX. i) Transformation of the allyl-moiety in hydroxy-ester derivative IX to an aldehyde moiety can be achived by various methods as described in literature. See for example Comprehensive Organic Transformations: A Guide to Functional Group Preparations, 2nd 30 Edition, Richard C. Larock. John Wiley & Sons, New York, NY. 1999. However, we find it convenient to di-hydroxylate the allyl-moiety with OS04 and treat the intermediate product with NaIO 4 (for analogous reaction see for example: J. Am Chem Soc. 2006, 128,4590-4591) to furnish the allyl moiety in derivatives III (R2=OH). The salt formation is effected at room temperature in accordance with methods 35 which are known per se and which are familiar to any person skilled in the art. Not only salts with inorganic acids, but also salts with organic acids come into consideration. Hydrochlorides, hydrobromides, sulphates, nitrates, citrates, acetates, maleates, WO 2008/151969 PCT/EP2008/056878 - 19 succinates, methan-sulphonates, p-toluenesulphonates and the like are examples of such salts. As mentioned earlier, the compounds of formula I and their pharmaceutically usable addition salts possess valuable pharmacological properties. It has been found that 5 the compounds of the present invention are antagonists of neurokinin 3 (NK-3) receptors. The compounds were investigated in accordance with the tests given hereinafter. Experimental procedure The compounds were investigated in accordance with the tests given hereinafter. 10 [ 3 H]SR142801 competition binding assay hNK3 receptor binding experiment were performed using [ 3 H]SR142801 (Catalog No. TRK1035, specific activity: 74.0 Ci/mmol, Amersham, GE Healthcare UK limited, Buckinghamshire, UK) and membrane isolated from HEK293 cells transiently expressing recombinant human NK3 receptor. After thawing, the membrane homogenates were 15 centrifuged at 48,000 X g for 10 min at 4 'C, the pellets were resuspended in the 50 mM Tris-HCl, 4 mM MnCl 2 , 1 ptM phosphoramidon, 0.1 % BSA binding buffer at pH 7.4 to a final assay concentration of 5 ptg protein/well. For inhibition experiments, membranes were incubated with [ 3 H] SR142801 at a concentration equal to KD value of radioligand and 10 concentrations of the inhibitory compound (0.0003-10 PM) (in a total reaction 20 volume of 500 [l) for 75 min at room temperature (RT). At the end of the incubation, membranes were filtered onto unitfilter (96-well white microplate with bonded GF/C filter preincubated 1 h in 0.3 % PEI + 0.3 % BSA, Packard BioScience, Meriden, CT) with a Filtermate 196 harvester (Packard BioScience) and washed 4 times with ice-cold 50 mM Tris-HCl, pH 7.4 buffer. Nonspecific binding was measured in the presence of 10 piM 25 SB222200 for both radioligands. The radioactivity on the filter was counted (5 min) on a Packard Top-count microplate scintillation counter with quenching correction after addition of 45 pl of microscint 40 (Canberra Packard S.A., Zurich, Switzerland) and shaking for 1 h. Inhibition curves were fitted according to the Hill equation: y = 100/(1+(x/ICo)nH), where nH slope factor using Excel-fit 4 software (Microsoft). IC 50 30 values were derived from the inhibition curve and the affinity constant (Ki) values were calculated using the Cheng-Prussoff equation Ki = IC 50 /(1+ [L]/KD) where [L] is the concentration of radioligand and KD is its dissociation constant at the receptor, derived WO 2008/151969 PCT/EP2008/056878 - 20 from the saturation isotherm. All experiments were performed in duplicate and the mean standard error (SEM) of the individual Ki values was calculated. Some results of preferred compounds of the hNK-3 receptor affinity were shown in the following Table 1. 5 Table 1 Example Compound name hNK 3 Ki [pM] N-(4-Chloro-benzyl)-2-(3,4-dichloro-phenyl)-4-(4 1 methanesulfonyl-piperazin- 1-yl) -N-methyl-butyramide 0.1709 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 2 yl) -N-methyl-N- (4-pyridin-4-yl-benzyl) -butyramide 0.3149 N- (2-Chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 3 methanesulfonyl-piperazin- 1-yl) -N-methyl-butyramide 0.6546 N-Benzyl-2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl 4 piperazin- 1-yl) -N-methyl-butyramide 0.3554 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 5 yl) -N-methyl-N- (4-trifluoromethyl-benzyl) -butyramide 0.1355 2- (3,4-Dichloro-phenyl) -N- (3-fluoro-4-methoxy-benzyl) -4 6 (4-methanesulfonyl-piperazin- 1-yl) -N-methyl-butyramide 0.6899 2- (3,4-Dichloro-phenyl) -N- (3-fluoro-benzyl) -4- (4 7 methanesulfonyl-piperazin- 1-yl) -N-methyl-butyramide 0.3878 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 8 yl) -2-methyl-N- (3 -trifluoromethyl-benzyl) -butyramide 0.2884 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 9 yl) -2-methyl-N- (3 -trifluoromethoxy-benzyl) -butyramide 0.1896 WO 2008/151969 PCT/EP2008/056878 - 21 Example Compound name hNK 3 Ki [pM] N-(3-Chloro-benzyl)-2-(3,4-dichloro-phenyl)-4-(4 10 methanesulfonyl-piperazin- 1-yl) -2,N-dimethyl-butyramide 0.1453 2- (3,4-Dichloro-phenyl) -N- (3-difluoromethoxy-benzyl) -4- (4 11 methanesulfonyl-piperazin- 1-yl) -2-methyl-butyramide 0.4168 N- (4-Chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 12 methanesulfonyl-piperazin- 1-yl) -2,N-dimethyl-butyramide 0.0664 2- (3,4-Dichloro-phenyl) -N- (4-difluoromethoxy-benzyl) -4- (4 13 methanesulfonyl-piperazin- 1-yl) -2-methyl-butyramide 0.3259 N-[1- (4-Chloro-phenyl) -ethyl] -2- (3,4-dichloro-phenyl) -4- (4 14 methanesulfonyl-piperazin- 1-yl) -2-methyl-butyramide 0.1707 N- [Cyclopropyl- (4-methoxy-phenyl) -methyl] -2- (3,4 dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 -yl) -2 15 methyl-butyramide 0.2338 N- (2-Chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 16 methanesulfonyl-piperazin- 1 -yl) -2,N-dimethyl-butyramide 0.1694 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 17 yl) -2-methyl-N- (4-trifluoromethoxy-benzyl) -butyramide 0.1464 N- (4-Cyano-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 18 methanesulfonyl-piperazin- 1 -yl) -2-methyl-butyramide 0.4337 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 19 yl) -2-methyl-N- (2-trifluoromethoxy-benzyl) -butyramide 0.429 WO 2008/151969 PCT/EP2008/056878 - 22 Example Compound name hNK 3 Ki [pM] 2-(3,4-Dichloro-phenyl)-N-(3-fluoro-4-trifluoromethyl benzyl)-4-(4-methanesulfonyl-piperazin-1-yl)-2-methyl 20 butyramide 0.0671 N-(3,4-Dichloro-benzyl)-2-(3,4-dichloro-phenyl)-4-(4 21 methanesulfonyl-piperazin- 1-yl) -2-methyl-butyramide 0.0655 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 22 yl) -2,N-dimethyl-N- (4-methyl-benzyl) -butyramide 0.0774 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 23 yl) -2,N-dimethyl-N- (4-pyridin-4-yl-benzyl) -butyramide 0.2009 2- (3,4-Dichloro-phenyl) -N- (3-fluoro-benzyl) -4- (4 24 methanesulfonyl-piperazin- 1-yl) -2,N-dimethyl-butyramide 0.2238 2- (3,4-Dichloro-phenyl) -N- (3-fluoro-4-methoxy-benzyl) -4 25 (4-methanesulfonyl-piperazin- 1-yl) -2,N-dimethyl-butyramide 0.1335 2- (3,4-Dichloro-phenyl) -N- (4-difluoromethoxy-3 -methoxy benzyl) -4- (4-methanesulfonyl-piperazin- 1-yl) -2,N-dimethyl 26 butyramide 0.2748 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 27 yl) -2-methyl-N- (4-trifluoromethyl-benzyl) -butyramide 0.082 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 28 yl) -2,N-dimethyl-N- (4-trifluoromethyl-benzyl) -butyramide 0.045 N- (4-Chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 29 methanesulfonyl-piperazin- 1-yl) -2-methyl-butyramide 0.0984 WO 2008/151969 PCT/EP2008/056878 - 23 Example Compound name hNK 3 Ki [pM] N-(4-Chloro-3-fluoro-benzyl)-2-(3,4-dichloro-phenyl)-4-(4 30 methanesulfonyl-piperazin- l-yl) -2-methyl-butyramide 0.1334 2- (3,4-Dichloro-phenyl) -N- (3-fluoro-4-methoxy-benzyl) -4 ((R) -4-methanesulfonyl-3-methyl-piperazin- l-yl) -2,N 31 dimethyl-butyramide 0.1087 N- [Cyclopropyl- (4-methoxy-phenyl) -methyl] -2- (3,4 dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl 32 piperazin- l-yl) -2-methyl-butyramide 0.0168 2- (3,4-Dichloro-phenyl) -N- (4-fluoro-3-trifluoromethyl benzyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- l-yl) 33 2,N-dimethyl-butyramide 0.0158 N- (3,5-Bis-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) 4- ((R) -4-methanesulfonyl-3-methyl-piperazin- l-yl) -2-methyl 34 butyramide 0.0481 2- (3,4-Dichloro-phenyl) -N- (4-difluoromethoxy-3 -methoxy benzyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- l-yl) 35 2,N-dimethyl-butyramide 0.2159 2- (3,4-Dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- l-yl) -2,N-dimethyl-N- (4-methyl-benzyl) 36 butyramide 0.0508 2- (3,4-Dichloro-phenyl) -N- (4-dimethylamino-benzyl) -4- ((R) 4-methanesulfonyl-3-methyl-piperazin- l-yl) -2-methyl 37 butyramide 0.4851 2- (3,4-Dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- l-yl) -2-methyl-N-quinoxalin-6-ylmethyl 38 butyramide 0.5452 WO 2008/151969 PCT/EP2008/056878 - 24 Example Compound name hNK 3 Ki [pM] N-(4-Chloro-3-trifluoromethyl-benzyl)-2-(3,4-dichloro phenyl)-4-((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 39 2,N-dimethyl-butyramide 0.0126 2-(3,4-Dichloro-phenyl)-N-(3-fluoro-4-trifluoromethyl benzyl)-4-((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 40 2,N-dimethyl-butyramide 0.0167 N-(3,4-Dichloro-benzyl)-2-(3,4-dichloro-phenyl)-4-((R)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2,N-dimethyl 41 butyramide 0.0133 N-(3,4-Dichloro-benzyl)-2-(3,4-dichloro-phenyl)-4-((R)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 42 butyramide 0.0057 2-(3,4-Dichloro-phenyl)-N-(3-difluoromethoxy-benzyl)-4 ((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 43 butyramide 0.0999 2-(3,4-Dichloro-phenyl)-N-(5-fluoro-2-trifluoromethyl benzyl)-4-((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 44 2-methyl-butyramide 0.2123 2-(3,4-Dichloro-phenyl)-4-((R)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2-methyl-N-(4-trifluoromethyl-benzyl) 45 butyramide 0.0333 2-(3,4-Dichloro-phenyl)-N-(2-fluoro-5-trifluoromethyl benzyl)-4-((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 46 2-methyl-butyramide 0.0995 WO 2008/151969 PCT/EP2008/056878 - 25 Example Compound name hNK 3 Ki [pM] N-[1-(4-Chloro-phenyl) -ethyl] -2-(3,4-dichloro-phenyl) -4 ((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 47 butyramide 0.0159 2-(3,4-Dichloro-phenyl)-4-((R)-4-methanesulfonyl-3-methyl piperazin-1-yl)-N-(3-methoxy-benzyl)-2,N-dimethyl 48 butyramide 0.2629 N-(2-Chloro-benzyl)-2-(3,4-dichloro-phenyl)-4-((R)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2,N-dimethyl 49 butyramide 0.088 2-(3,4-Dichloro-phenyl) -N-[1-(3,4-dichloro-phenyl) -ethyl] -4 ((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 50 butyramide 0.0258 2-(3,4-Dichloro-phenyl)-4-((R)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2-methyl-N-(3-trifluoromethoxy-benzyl) 51 butyramide 0.0146 N-(4-Chloro-3-fluoro-benzyl)-2-(3,4-dichloro-phenyl)-4 ((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 52 butyramide 0.0464 2-(3,4-Dichloro-phenyl)-4-((R)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2-methyl-N-(4-trifluoromethoxy-benzyl) 53 butyramide 0.0228 N-(4-Chloro-3-trifluoromethyl-benzyl)-2-(3,4-dichloro phenyl)-4-((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 54 2-methyl-butyramide 0.0175 WO 2008/151969 PCT/EP2008/056878 - 26 Example Compound name hNK 3 Ki [pM] 2-(3,4-Dichloro-phenyl)-4-((R)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2,N-dimethyl-N-(4-trifluoromethyl-benzyl) 55 butyramide 0.0169 N-(4-Chloro-benzyl)-2-(3,4-dichloro-phenyl)-4-((R)-4 56 methanesulfonyl-3-methyl-piperazin-1-yl)-2,N-dimethyl- 0.0265 butyramide N-(4-Cyano-benzyl)-2-(3,4-dichloro-phenyl)-4-((R)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 57 butyramide 0.1611 2-(3,4-Dichloro-phenyl)-4-((R)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2,N-dimethyl-N-(3-trifluoromethyl-benzyl) 58 butyramide 0.0562 N-(3-Chloro-benzyl)-2-(3,4-dichloro-phenyl)-4-((R)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2,N-dimethyl 59 butyramide 0.1032 2-(3,4-Dichloro-phenyl)-N-(3-fluoro-benzyl)-4-((R)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2,N-dimethyl 60 butyramide 0.1305 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2,N-dimethyl-N-(4-pyridin-4-yl-benzyl) 61 butyramide 0.2468 2-(3,4-Dichloro-phenyl)-N-(3-fluoro-4-methoxy-benzyl)-4 ((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2,N 62 dimethyl-butyramide 0.2156 N-[Cyclopropyl-(4-methoxy-phenyl)-methyl]-2-(3,4 dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl 63 piperazin- 1-yl) -2-methyl-butyramide 0.0657 WO 2008/151969 PCT/EP2008/056878 - 27 Example Compound name hNK 3 Ki [pM] 2-(3,4-Dichloro-phenyl)-N-(4-fluoro-3-trifluoromethyl benzyl)-4-((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 64 2,N-dimethyl-butyramide 0.0168 N-(3,5-Bis-trifluoromethyl-benzyl)-2-(3,4-dichloro-phenyl) 4-((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 65 butyramide 0.0846 2-(3,4-Dichloro-phenyl)-N-(4-difluoromethoxy-3-methoxy benzyl)-4-((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 66 2,N-dimethyl-butyramide 0.2767 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2,N-dimethyl-N-(4-methyl-benzyl) 67 butyramide 0.0992 2-(3,4-Dichloro-phenyl)-N-(4-dimethylamino-benzyl)-4-((S) 4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 68 butyramide 0.7341 N-(4-Chloro-3-trifluoromethyl-benzyl)-2-(3,4-dichloro phenyl)-4-((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 69 2,N-dimethyl-butyramide 0.0114 2-(3,4-Dichloro-phenyl)-N-(3-fluoro-4-trifluoromethyl benzyl)-4-((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 70 2,N-dimethyl-butyramide 0.0192 N-(3,4-Dichloro-benzyl)-2-(3,4-dichloro-phenyl)-4-((S)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2,N-dimethyl 71 butyramide 0.0125 WO 2008/151969 PCT/EP2008/056878 - 28 Example Compound name hNK 3 Ki [pM] N-(3,4-Dichloro-benzyl)-2-(3,4-dichloro-phenyl)-4-((S)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 72 butyramide 0.0429 2-(3,4-Dichloro-phenyl)-N-(3-difluoromethoxy-benzyl)-4 ((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 73 butyramide 0.2998 2-(3,4-Dichloro-phenyl)-N-(5-fluoro-2-trifluoromethyl benzyl)-4-((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2 74 methyl-butyramide 0.4962 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2-methyl-N-(4-trifluoromethyl-benzyl) 75 butyramide 0.0681 2-(3,4-Dichloro-phenyl)-N-(2-fluoro-5-trifluoromethyl benzyl)-4-((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2 76 methyl-butyramide 0.311 N-[1-(4-Chloro-phenyl) -ethyl] -2-(3,4-dichloro-phenyl) -4 ((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 77 butyramide 0.0674 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl piperazin-1-yl)-N-(3-methoxy-benzyl)-2,N-dimethyl 78 butyramide 0.6112 N-(2-Chloro-benzyl)-2-(3,4-dichloro-phenyl)-4-((S)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2,N-dimethyl 79 butyramide 0.1677 WO 2008/151969 PCT/EP2008/056878 - 29 Example Compound name hNK 3 Ki [pM] 2-(3,4-Dichloro-phenyl) -N-[1-(3,4-dichloro-phenyl) -ethyl] -4 ((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 80 butyramide 0.0162 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2-methyl-N-(3-trifluoromethoxy-benzyl) 81 butyramide 0.1259 N-(4-Chloro-3-fluoro-benzyl)-2-(3,4-dichloro-phenyl)-4-((S) 4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl 82 butyramide 0.0942 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2-methyl-N-(4-trifluoromethoxy-benzyl) 83 butyramide 0.0571 N-(4-Chloro-3-trifluoromethyl-benzyl)-2-(3,4-dichloro phenyl)-4-((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 84 2-methyl-butyramide 0.0452 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2,N-dimethyl-N-(4-trifluoromethyl-benzyl) 85 butyramide 0.0277 N-(4-Chloro-benzyl)-2-(3,4-dichloro-phenyl)-4-((S)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2,N-dimethyl 86 butyramide 0.0663 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2,N-dimethyl-N-(3-trifluoromethyl-benzyl) 87 butyramide 0.052 WO 2008/151969 PCT/EP2008/056878 - 30 Example Compound name hNK 3 Ki [pM] N-(3-Chloro-benzyl)-2-(3,4-dichloro-phenyl)-4-((S)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2,N-dimethyl 88 butyramide 0.1069 2-(3,4-Dichloro-phenyl)-N-(3-fluoro-benzyl)-4-((S)-4 methanesulfonyl-3-methyl-piperazin-1-yl)-2,N-dimethyl 89 butyramide 0.2656 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl piperazin-1-yl)-2,N-dimethyl-N-(6-trifluoromethyl-pyridin-3 90 ylmethyl) -butyramide 0.5251 2- (3,4-Dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl piperazin- 1-yl) -2-methyl-N- (6-trifluoromethyl-pyridin-3 91 ylmethyl) -butyramide 0.9063 2- (3,4-Dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- 1-yl) -2-methyl-N- (6-trifluoromethyl-pyridin-3 92 ylmethyl) -butyramide 0.5821 (S or R) -N- (3,4-Dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4 ((R) -4-methanesulfonyl-3 -methyl-piperazin- 1-yl) -2-methyl 93 butyramide 0.0192 (R or S)-N- (3,4-Dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4 ((R) -4-methanesulfonyl-3 -methyl-piperazin- 1-yl) -2-methyl 94 butyramide 0.112 2- (3,4-Dichloro-phenyl) -N- (3-fluoro-4-trifluoromethyl benzyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2-methyl 95 butyramide 0.0643 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 96 1-yl) -2,N-dimethyl-N- (4-trifluoromethyl-benzyl) -butyramide 0.0245 WO 2008/151969 PCT/EP2008/056878 - 31 Example Compound name hNK 3 Ki [pM] N-(4-Chloro-benzyl)-2-(3,4-dichloro-phenyl)-4-(4 methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl 97 butyramide 0.0299 N- (4-Chloro-3-fluoro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 98 methanesulfonyl- [1,4] diazepan- 1-yl) -2-methyl-butyramide 0.066 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 99 1-yl) -2-methyl-N- (4-trifluoromethoxy-benzyl) -butyramide 0.1277 2- (3,4-Dichloro-phenyl) -N- (3-fluoro-benzyl) -4- (4 methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl 100 butyramide 0.0965 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 101 1-yl) -2,N-dimethyl-N- (3-trifluoromethyl-benzyl) -butyramide 0.0184 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 102 1-yl) -2-methyl-N- (3-trifluoromethoxy-benzyl) -butyramide 0.1229 N- (3-Chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl 103 butyramide 0.0418 2- (3,4-Dichloro-phenyl) -N- (3-fluoro-4-methoxy-benzyl) -4 (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl 104 butyramide 0.0602 N- [Cyclopropyl- (4-methoxy-phenyl) -methyl] -2- (3,4 dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 -yl) -2 105 methyl-butyramide 0.1345 WO 2008/151969 PCT/EP2008/056878 - 32 Example Compound name hNK 3 Ki [pM] 2-(3,4-Dichloro-phenyl)-N-(4-fluoro-3-trifluoromethyl benzyl)-4-(4-methanesulfonyl-[1,4]diazepan-1-yl)-2,N 106 dimethyl-butyramide 0.0092 N-(3,5-Bis-trifluoromethyl-benzyl)-2-(3,4-dichloro-phenyl) 4-(4-methanesulfonyl-[1,4]diazepan-1-yl)-2-methyl 107 butyramide 0.2094 2-(3,4-Dichloro-phenyl)-N-(4-difluoromethoxy-3-methoxy benzyl)-4-(4-methanesulfonyl-[1,4]diazepan-1-yl)-2,N 108 dimethyl-butyramide 0.0895 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl-[1,4]diazepan 109 1-yl)-2,N-dimethyl-N-(4-methyl-benzyl)-butyramide 0.0335 2-(3,4-Dichloro-phenyl)-N-(4-dimethylamino-benzyl)-4-(4 110 methanesulfonyl- [1,4] diazepan- 1-yl) -2-methyl-butyramide 0.2908 N- (4-Chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2,N 111 dimethyl-butyramide 0.0067 2- (3,4-Dichloro-phenyl) -N- (3-fluoro-4-trifluoromethyl benzyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2,N 112 dimethyl-butyramide 0.0162 N- (3,4-Dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl 113 butyramide 0.0101 N- (3,4-Dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 114 methanesulfonyl- [1,4] diazepan- 1-yl) -2-methyl-butyramide 0.0399 WO 2008/151969 PCT/EP2008/056878 - 33 Example Compound name hNK 3 Ki [pM] 2-(3,4-Dichloro-phenyl)-N-(3-difluoromethoxy-benzyl)-4-(4 115 methanesulfonyl- [1,4] diazepan- 1-yl) -2-methyl-butyramide 0.1832 2- (3,4-Dichloro-phenyl) -N- (5-fluoro-2-trifluoromethyl benzyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2-methyl 116 butyramide 0.5751 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 117 1-yl) -2-methyl-N- (4-trifluoromethyl-benzyl) -butyramide 0.0496 2- (3,4-Dichloro-phenyl) -N- (2-fluoro-5-trifluoromethyl benzyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2-methyl 118 butyramide 0.1358 N-[1- (4-Chloro-phenyl) -ethyl] -2- (3,4-dichloro-phenyl) -4- (4 119 methanesulfonyl- [1,4] diazepan- 1 -yl) -2-methyl-butyramide 0.1212 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 120 1 -yl) -N- (3-methoxy-benzyl) -2,N-dimethyl-butyramide 0.1079 N- (2-Chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 methanesulfonyl- [1,4] diazepan- 1 -yl) -2,N-dimethyl 121 butyramide 0.0312 2- (3,4-Dichloro-phenyl) -N- [1- (3,4-dichloro-phenyl) -ethyl] -4 122 (4-methanesulfonyl- [1,4] diazepan- 1 -yl) -2-methyl-butyramide 0.0434 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 123 1 -yl) -2,N-dimethyl-N- (4-pyridin-4-yl-benzyl) -butyramide 0.0934 N- (4-Cyano-benzyl) -2- (3,4-dichloro-phenyl) -4- (4 124 methanesulfonyl- [1,4] diazepan- 1 -yl) -2-methyl-butyramide 0.1074 WO 2008/151969 PCT/EP2008/056878 - 34 Example Compound name hNK 3 Ki [pM] 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl-[1,4]diazepan 1-yl)-2,N-dimethyl-N-(6-trifluoromethyl-pyridin-3-ylmethyl) 125 butyramide 0.2751 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl-[1,4]diazepan 1-yl)-2-methyl-N-(6-trifluoromethyl-pyridin-3-ylmethyl) 126 butyramide 0.9486 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1 127 yl)-2,N-dimethyl-N-(3-trifluoromethyl-benzyl)-butyramide 0.0784 (R or S)-2-(3,4-Dichloro-phenyl)-N-((R)-2-hydroxy- 1 phenyl-ethyl) -4- (4-methanesulfonyl-piperazin- l-yl) -2-methyl 128 butyramide 0.0406 (S or R)-2-(3,4-Dichloro-phenyl)-N-((R)-2-hydroxy-1 phenyl-ethyl) -4- (4-methanesulfonyl-piperazin-1 -yl) -2-methyl 129 butyramide 0.3338 N-[(R)-1-(4-Chloro-phenyl)-2-hydroxy-ethyl]-2-(3,4 dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-2 130 methyl-butyramide 0.0399 N-[(S)-i-(4-Chloro-phenyl)-2-hydroxy-ethyl]-2-(3,4 dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-2 131 methyl-butyramide 0.1863 2-(3,4-Dichloro-phenyl)-N-[(R)-1-(4-fluoro-phenyl)-2 hydroxy-ethyl] -4- (4-methanesulfonyl-piperazin- l-yl) -2 132 methyl-butyramide 0.1463 2-(3,4-Dichloro-phenyl)-N-[(S)-i-(4-fluoro-phenyl)-2 hydroxy-ethyl] -4- (4-methanesulfonyl-piperazin- l-yl) -2 133 methyl-butyramide 0.3972 WO 2008/151969 PCT/EP2008/056878 - 35 Example Compound name hNK 3 Ki [pM] 2-(3,4-Dichloro-phenyl) -N-[1-(4-fluoro-phenyl) -ethyl] -4-(4 134 methanesulfonyl-piperazin- 1-yl) -2-methyl-butyramide 0.2287 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 yl) -2-methyl-N- [2,2,2-trifluoro- 1- (4-fluoro-phenyl) -ethyl] 135 butyramide 0.1961 N- [(R) -1 -(4-Chloro-phenyl) -2-hydroxy-ethyl] -2- (3,4 dichloro-phenyl) -4- (1,1 -dioxo-hexahydro- 1 6 -thia-5,7a-diaza 136 inden-5-yl) -2-methyl-butyramide 0.0154 2- (3,4-Dichloro-phenyl) -4- (1,1 -dioxo-hexahydro- 1 6 -thia 5,7a-diaza-inden-5-yl) -N- [(R) -1- (4-fluoro-phenyl) -2 137 hydroxy-ethyl] -2-methyl-butyramide 0.0305 In addition, the present compounds showed high selective affinity to the hNK-3 receptor compared with the hNK- 1 and hNK-2 receptors. The compounds of formula I as well as their pharmaceutically usable acid addition 5 salts can be used as medicaments, e.g. in the form of pharmaceutical preparations. The pharmaceutical preparations can be administered orally, e.g. in the form of tablets, coated tablets, drags, hard and soft gelatine capsules, solutions, emulsions or suspensions. The administration can, however, also be effected rectally, e.g. in the form of suppositories, or parenterally, e.g. in the form of injection solutions. 10 The compounds of formula I and their pharmaceutically usable acid addition salts can be processed with pharmaceutically inert, inorganic or organic excipients for the production of tablets, coated tablets, dragees and hard gelatine capsules. Lactose, corn starch or derivatives thereof, talc, stearic acid or its salts etc can be used as such excipients e.g. for tablets, drags and hard gelatine capsules. 15 Suitable excipients for soft gelatine capsules are e.g. vegetable oils, waxes, fats, semi solid and liquid polyols etc.

WO 2008/151969 PCT/EP2008/056878 - 36 Suitable excipients for the manufacture of solutions and syrups are e.g. water, polyols, saccharose, invert sugar, glucose etc. Suitable excipients for injection solutions are e.g. water, alcohols, polyols, glycerol, vegetable oils etc. 5 Suitable excipients for suppositories are e.g. natural or hardened oils, waxes, fats, semi-liquid or liquid polyols etc. Moreover, the pharmaceutical preparations can contain preservatives, solubilizers, stabilizers, wetting agents, emulsifiers, sweeteners, colorants, flavorants, salts for varying the osmotic pressure, buffers, masking agents or antioxidants. They can also contain still 10 other therapeutically valuable substances. The dosage can vary within wide limits and will, of course, be fitted to the individual requirements in each particular case. In general, in the case of oral administration a daily dosage of about 10 to 1000 mg per person of a compound of general formula I should be appropriate, although the above upper limit can also be 15 exceeded when necessary. Example A Tablets of the following composition are manufactured in the usual manner: mg / tablet Active substance 5 20 Lactose 45 Corn starch 15 Microcrystalline cellulose 34 Magnesium stearate 1 Tablet weight 100 25 Example B Capsules of the following composition are manufactured: mg / capsule Active substance 10 Lactose 155 30 Corn starch 30 Talc 5 Capsule fill weight 200 WO 2008/151969 PCT/EP2008/056878 - 37 The active substance, lactose and corn starch are firstly mixed in a mixer and then in a comminuting machine. The mixture is returned to the mixer, the talc is added thereto and mixed thoroughly. The mixture is filled by machine into hard gelatine capsules. 5 Example C Suppositories of the following composition are manufactured: mg / supp. Active substance 15 Suppository mass 1285 10 Total 1300 The suppository mass is melted in a glass or steel vessel, mixed thoroughly and cooled to 45 'C. Thereupon, the finely powdered active substance is added thereto and stirred until it has dispersed completely. The mixture is poured into suppository moulds of suitable size, left to cool, the suppositories are then removed from the moulds and 15 packed individually in wax paper or metal foil. The following Examples illustrate the present invention without limiting it. All temperatures are given in degrees Celsius. Abbreviations DCM = dichloromethane; 20 DIPEA = N,N-diisopropylethylamine; DMA = N,N-dimethylacetamido; DMF = N,N-dimethylformamide; HPLC = high-performance liquid chromatography; MS = mass spectroscopy; 25 TBTU = O-benzotriazol- 1 -yl-N,N,N',N'-tetramethyluronium tetrafluoroborate; THF = tetrahydrofurane. Intermediate 1 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-butyric acid 0 NN 0 0

H

WO 2008/151969 PCT/EP2008/056878 - 38 a) step 1: 2-(3,4-Dichloro-phenyl)-4-oxo-butyric acid methyl ester CI H o Hi 0 CI / (0 0 \ A mixture of 25 g (114 mmol) (3,4-dichloro-phenyl)-acetic acid methyl ester (commercially available), 5.7 g (131 mmol) NaH (55 %) and 23.1 g (137 mmol) 5 bromoacetaldehyde dimethylacetal in 80 mL DMF was stirred at room temperature for 3 h. The mixture was poured onto ice/water and extracted with ethyl acetate. The combined organic phases were washed with NaCl aq., dried with Na 2

SO

4 and evaporated to dryness. The residue was dissolved in 250 mL THF and treated with 300 mL IN HCl at room temperature for 20 h. Water was added and the mixture was extracted with ethyl 10 acetate. The combined organic phases were washed with NaCl aq., dried with Na 2

SO

4 , evaporated to dryness and subjected to column chromatography on silica eluting with a gradient formed from heptane and ethyl acetate. The product containing fractions were evaporated to yield 9.7 g (32 %) of the title compound as light yellow oil. MS(m/e): 260.1 / 262.2 (MH*). 15 b) step 2: 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-butyric acid methyl ester NrD 0 el N CI1 0 o A mixture of 1.07 g (4.1 mmol) 2-(3,4-dichloro-phenyl)-4-oxo-butyric acid methyl ester, 0.74 g (4.5 mmol) 1-methanesolfonyl-piperazine, 1.3 g (6.1 mmol) sodium 20 triacteoxyborohydride and 0.37 g (6.1 mmol) acetic acid in 40 mL THF was stirred at room temperature for 17 h. Water and Na 2

CO

3 aq. (10 %) was added and the mixture was extracted with ethyl acetate. The combined organic fractions were washed with NaCl sat. aq. dried with MgSO 4 , filtered and evaporated to dryness. The residue was purified by flash column chromatography on silica eluting with a gradient formed from DCM, 25 methanol and NH 3 aq. The product containing fractions were evaporated to yield 1.42 g (85 %) of the title compound as colorless waxy solid. MS(m/e): 409.3 (MH*). c) step 3: 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-butyric acid A mixture of 1.42 g (3.4 mmol) 2-(3,4-dichloro-phenyl)-4-(4-methanesulfonyl piperazin-1-yl)-butyric acid methyl ester and 0.182 g (4.3 mmol) LiOH'H 2 0 in 30 mL 30 water and 30 mL THF was heated to reflux for 1 h. The mixture was treated with 4N HCl WO 2008/151969 PCT/EP2008/056878 - 39 aq. and evaporated to dryness. The residue was used without further purification in the subsequent step. MS(m/e): 395.0 (MH*). Intermediate 2 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-2-methyl-butyric acid 0' ci N II C N \\0 N CI 5 0 0 a) step 1: 3- (3,4-Dichloro-phenyl) -dihydro-furan- 2-one (commercially available) CI CI / 0 0 A mixture of 30 g (137 mmol) (3,4-dichloro-phenyl)-acetic acid methyl ester (commercially available), 6.47 g (151 mmol) NaH (55 %) and 35.8 g (171 mmol) 2-(2 10 bromo-ethoxy)-tetrahydro-pyran in 100 mL DMF was stirred at room temperature for 17h. The mixture was evaporated to dryness and partitioned between water and ethyl acetate. The combined organic phases were washed with NaCl aq., dried with Na 2

SO

4 and evaporated. The residue was treated with 400 mL 4N HCl in dioxane in 250 mL methanol and stirred for 16 h at room temperature. The mixture was evaporated to dryness and 15 subjected to column chromatography on silica eluting with a gradient formed from ethyl acetate and heptane. The combined product fractions were evaporated to yield 18.5 g (58 %) of the title compound as yellow oil. b) step 2: 3- (3,4-Dichloro-phenyl) -3-methyl-dihydro-furan-2-one CI CI 0 0 20 A mixture of 18.5 g (80 mmol) 3-(3,4-dichloro-phenyl)-dihydro-furan-2-one, 3.84 g (88 mmol) NaH (55 % suspension) and 14.2 g (100 mmol) iodomethane in 300 mL THF was stirred for 64 h at room temperature. NH 4 Cl aq. sat. was added and the mixture was extracted with ethyl acetate. The organic phases were washed with NaCl aq. sat. dried with Na 2

SO

4 , filtered and evaporated to dryness. The residue was purified by flash 25 column chromatography on silica eluting with a gradient formed from ethyl acetate and WO 2008/151969 PCT/EP2008/056878 - 40 heptane. The product containing fractions were evaporated to yield 16 g (82 %) of the title compound as yellow oil. MS(m/e): 246.0 (MH*). c) step 3: 4-Bromo-2-(3,4-dichloro-phenyl)-2-methyl-butyric acid methyl ester CI Br CI1 0 0 5 To a mixture of 3.3 g (13.5 mmol) 3-(3,4-dichloro-phenyl)-3-methyl-dihydro-furan-2 one in 15 mL acetic acid was added 48 mL HBr (33 %) in acetic acid and after 63 h 20 mL HBr (33 %) in acetic acid and stirred for another 21 h at room temperature. The mixture was pored onto ice-water and extracted with ethyl ether. The combined organic phases were washed with NaCl aq. sat., dried with Na 2

SO

4 , filtered and evaporated to dryness. 10 The residue was taken up in 150 mL toluene and 6.5 mL (89 mmol) thionylchloride were added. The mixture was heated to 75 'C for 4 h, cooled to 0 'C, treated with 20 mL methanol and allowed to stand for 16 h at room temperature. The mixture was evaporated to dryness and subjected to column chromatography on silica eluting with a gradient formed from ethyl acetate and heptane. The product containing fractions were 15 evaporated to yield 4.32 g (94 %) of the title compound as light yellow oil. MS(m/e): 341.9 (MH*). d) step 4: 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-2-methyl butyric acid methyl ester 0

N

0 C, 0 0o N 20 A mixture of 0.325 g (0.95 mmol) 4-bromo-2-(3,4-dichloro-phenyl)-2-methyl-butyric acid methyl ester, 0.667 g (4 mmol) 1-methanesulfonyl piperazine (commercially available) and 0.154 g (1.2 mmol) NN-diisopropylethylamine in 2.5 mL DMF was heated to 50 'C for 42 h. Another mixture of 1.2 g (3.5 mmol) 4-bromo-2-(3,4-dichloro phenyl)-2-methyl-butyric acid methyl ester, 2.32 g (14 mmol) 1-methanesulfonyl 25 piperazine (commercially available) and 0.722 g (5.5 mmol) NN-diisopropylethylamine in 30 mL DMF was heated to 55 'C for 84 h. The two mixtures were combined, evaporated to dryness, suspended in a mixture formed from methanol and DCM and filtered. The precipitate was washed with DCM, isolute was added and evaporated to dryness. The residue was subjected to column chromatography on silica eluting with a 30 gradient formed from DCM, methanol and NH 3 aq. The product containing fractions WO 2008/151969 PCT/EP2008/056878 - 41 were evaporated to yield 1.16 g (61 %) of the title compound as light yellow viscous oil. MS(m/e): 423.1 (MH*). e) step 5: 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-2-methyl butyric acid 5 A mixture of 1.15 g (2.7 mmol) 2-(3,4-dichloro-phenyl)-4-(4-methanesulfonyl piperazin-1-yl)-2-methyl-butyric acid methyl ester and 0.171 g (4.08 mmol) LiOH'H 2 0 in 25 mL water and 25 mL THF was stirred at room temperature for 16 h. The mixture was treated with 4N HCl aq. and evaporated to dryness. The residue was used without further purification in the subsequent step. MS(m/e): 409.2 (MH*). 10 Intermediate 3 2-(3,4-Dichloro-phenyl)-4-((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl)-2-methyl butyric acid 0 CI_ 0 0O H a) step 1: 2-(3,4-Dichloro-phenyl)-4-((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 15 2-methyl-butyric acid methyl ester 0 CI,

N

0 C1I 0 '0 In analogy to the procedure described for the synthesis of 2-(3,4-dichloro-phenyl)-4-(4 methanesulfonyl-piperazin-1-yl)-2-methyl-butyric acid methyl ester (intermediate 2, step 4) the title compound was prepared from 4-bromo-2-(3,4-dichloro-phenyl)-2-methyl 20 butyric acid methyl ester (intermediate 2, step 3) and (R)-1-methanesulfonyl-2-methyl piperazine (commercially available) in DMA as light brown viscous oil. MS(m/e): 437.0 (MH*). b) step 2: 2-(3,4-Dichloro-phenyl)-4-((R)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 2-methyl-butyric acid 25 In analogy to the procedure described for the synthesis of 2-(3,4-dichloro-phenyl)-4-(4 methanesulfonyl-piperazin-1-yl)-2-methyl-butyric acid (intermediate 2, step 5) the title compound was prepared from 2-(3,4-dichloro-phenyl)-4-((R)-4-methanesulfonyl-3 methyl-piperazin- 1 -yl) -2-methyl-butyric acid methyl ester by saponification with LiOH'H 2 0 as yellow foam. MS(m/e): 423.1 (MH*).

WO 2008/151969 PCT/EP2008/056878 - 42 Intermediate 4 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl-piperazin- 1-yl)-2-methyl butyric acid 0 CI N H 5 a) step 1: 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 2-methyl-butyric acid methyl ester 0 CIN N 0 0 0 In analogy to the procedure described for the synthesis of 2-(3,4-dichloro-phenyl)-4-(4 methanesulfonyl-piperazin-1-yl)-2-methyl-butyric acid methyl ester (intermediate 2, step 1o 4) the title compound was prepared from 4-bromo-2-(3,4-dichloro-phenyl)-2-methyl butyric acid methyl ester (intermediate 2, step 3) and (S)-1-methanesulfonyl-2-methyl piperazine (commercially available) in DMA as light brown viscous oil. MS(m/e): 437.0 (MH*). b) step 2: 2-(3,4-Dichloro-phenyl)-4-((S)-4-methanesulfonyl-3-methyl-piperazin-1-yl) 15 2-methyl-butyric acid In analogy to the procedure described for the synthesis of 2-(3,4-dichloro-phenyl)-4-(4 methanesulfonyl-piperazin-1-yl)-2-methyl-butyric acid (intermediate 2, step 5) the title compound was prepared from 2-(3,4-dichloro-phenyl)-4-((S)-4-methanesulfonyl-3 methyl-piperazin- 1 -yl) -2-methyl-butyric acid methyl ester by saponification with 20 LiOH'H 2 0 as yellow foam. MS(m/e): 423.1 (MH*). Intermediate 5 2-(3,4-Dichloro-phenyl)-4-(4-methanesulfonyl- [1,4]diazepan-1-yl)-2-methyl-butyric acid CI0 CI0 0 o H 25 a) step 1: 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl- [1,41 diazepan- 1 -yl) -2-methyl butyric acid methyl ester WO 2008/151969 PCT/EP2008/056878 - 43 CI0 N-S CI0 0 0 In analogy to the procedure described for the synthesis of 2-(3,4-dichloro-phenyl)-4-(4 methanesulfonyl-piperazin-1-yl)-2-methyl-butyric acid methyl ester (intermediate 2, step 4) the title compound was prepared from 4-bromo-2-(3,4-dichloro-phenyl)-2-methyl 5 butyric acid methyl ester (intermediate 2, step 3) and 1-methanesulfonyl-[1,4]diazepane (commercially available) in DMA as light brown viscous oil. MS(m/e): 437.2 (MH*). b) step 2: 2- (3,4-Dichloro-phenyl) -4- (4-methanesulfonyl- [1,41 diazepan- 1 -yl) -2-methyl butyric acid In analogy to the procedure described for the synthesis of 2-(3,4-dichloro-phenyl)-4-(4 10 methanesulfonyl-piperazin-1-yl)-2-methyl-butyric acid (intermediate 2, step 5) the title compound was prepared from 2-(3,4-dichloro-phenyl)-4-(4-methanesulfonyl [1,4]diazepan-1-yl)-2-methyl-butyric acid methyl ester by saponification with LiOH'H 2 0 as yellow foam. MS(m/e): 423.1 (MH*). Intermediate 6 15 2-(3,4-Dichloro-phenyl)-4-(1,1-dioxo-hexahydro- 1i 6 -thia-5,7a-diaza-inden-5-yl)-2 methyl-butyric acid NS a) step 1: 2-(3,4-Dichloro-phenyl)-4,4-dimethoxy-2-methyl-butyric acid methyl ester 0CI - 0 20 A mixture of 35 g (150 mmol) 2-(3,4-dichloro-phenyl)-propionic acid methyl ester (Journal of Medicinal Chemistry (2004), 47(23), 5753-5765), 31.7 g (188 mmol) bromoacetaldehyde dimethyl acetal (commercially available and 6.6 g (165 mmol) NaH (55 %) in 100 mL DMF was stirred at room temperature and afterwards evaporated to dryness. Ice water and ethyl acetate was added and the organic fraction was washed with 25 sat. NaCl aq., dried with Na 2

SO

4 and evaporated. The residue was purified by column chromatography on silica eluting with a mixture of ethyl acetate and hexane. The product WO 2008/151969 PCT/EP2008/056878 - 44 containing fractions were evaporated to yield 29.6 g (61 %) of the title compound as yellow liquid. b) step 2: 2-(3,4-Dichloro-phenyl)-2-methyl-4-oxo-butyric acid methyl ester 50 A mixture of 6 g (19 mmol) 2-(3,4-dichloro-phenyl)-4,4-dimethoxy-2-methyl-butyric acid methyl ester and 28 mL 2N HCl aq. in 60 mL THF and 60 mL water was stirred at room temperature for 20 h. The mixture was extracted with diethyl ether. The combined organic phases were washed with sat. NaCl aq., dried with Na 2

SO

4 and evaporated to 10 dryness. The residue was subjected to column chromatography on silica eluting with a gradient formed from ethyl acetate and hexane. The product containing fractions were evaporated to yield 3 g (58 %) of the title compound as light yellow oil. c) step 3: 2-(3,4-Dichloro-phenyl)-4-(1,1-dioxo-hexahydro-1X-thia-5,7a-diaza-inden-5 yl)-2-methyl-butyric acid methyl ester CI N S 15 0 0 A mixture of 0.8 g (2.9 mmol) 2-(3,4-dichloro-phenyl)-2-methyl-4-oxo-butyric acid methyl ester, 0.742 g (3.48 mmol) 2H-isothiazolo[2,3-a]pyrazine, hexahydro-, 1,1 dioxide (WO 2007/028654), 0.924 g (4.36 mmol) sodium triacetoxyborohydride, 0.26 g (4.3 mmol) acetic acid and 0.353 g (3.5 mmol)NEt 3 in 80 mL DCM was stirred at room 20 temperature. Na 2

CO

3 aq. (10 %) was added and the organic phase was washed with sat. NaCl aq., dried with Na 2

SO

4 and evaporated. The residue was subjected to column chromatography on silica eluting with a gradient formed from DCM, methanol and NH 3 aq. (2N). The product containing fractrions were evaporated to yield 1.18 g (92 %) of the title compound as colourless viscous oil. MS(m/e): 435.2 (MH*). 25 d) step 4: 2-(3,4-Dichloro-phenyl)-4-(1,1-dioxo-hexahydro-1X-thia-5,7a-diaza-inden-5 yl)-2-methyl-butyric acid A mixture of 1.16 g (2.6 mmol) 2-(3,4-dichloro-phenyl)-4-(1,1-dioxo-hexahydro-1 6 thia-5,7a-diaza-inden-5-yl)-2-methyl-butyric acid methyl ester and 0.123 g (2.9 mmol) LiOH'H 2 0 in 40 mL water and 40 mL THF was stirred at room temperature for 48 h. 30 After evaporation of THF the pH was adhusted to pH=2 with 2N HCl aq., evaporated to WO 2008/151969 PCT/EP2008/056878 - 45 dryness, taken up in acetonitrile and evaporated (3x), The residue was dried at 60 'C under high vacuum and used without further purification in the consecutive amide coupling step. MS(m/e): 421.0 (MH*). Example 1 5 N-(4-Chloro-benzyl)-2-(3,4-dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-N methyl-butyramide CI CIG \ / \ 0 A mixture of 25 mg 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1-yl) butyric acid (intermediate 1), 24.1 mg (0.075 mmol) TBTU, 11.67 mg (0.075 mmol) (4 10 chloro-benzyl)-methyl-amine (commercially available) and 0.06 mL NN-diisopropyl ethylamine in 0.75 mL DMF was shaken at room temperature and subsequently subjected to purification by preparative HPLC on reversed phase eluting with a gradient formed from acetonitrile, water and NEt 3 . The product containing fractions were evaporated to yield 20.7 mg (67 %) of the title compound as yellow viscous oil. MS(m/e): 534.2 (MH*). 15 In analogy to the procedure described for the synthesis of N-(4-chloro-benzyl)-2-(3,4 dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-N-methyl-butyramide (example 1) further piperazine derivatives have been synthesized from the starting materials listed in Table 2. Table 2 comprises examples 2- 92. Table 2: MW No MW structure Systematic Name starting materials found MH+ 2-(3,4-Dichloro 2-(3,4-Dichloro- phenyl)-4-(4 phenyl)-4-(4- methanesulfonyl 0 methanesulfonyl- piperazin-1-yl) 2 55. cNN mierhan-1-foyl- butyric acid 2meyl--y-n- (intermediate 1) and 575.3 methyl-N-(4-pyridm- Methyl-(4-pyridin-4 butyramide yl-benzyl)-amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 46 MW No MW structure Systematic Name starting materials found MH+ 2- (3,4-Dichioro CI phenyl)-4-(4 N-(2-Chloro-benzyl)- methanesulfonyl 2-(3,4-dichloro- piperazin-l-yl) 3 59N N -phenyl)-4-(4- butyric acid 532.9 methanesulfonyl- (intermediate 1) and piperazin-1-yl)-N- (2-Chloro-benzyl) methyl-butyramide methyl-amine (commercially available) 2-(3,4-Dichloro phenyl)-4-(4 N-Benzyl-2-(3,4- methanesulfonyl dichloro-phenyl) -4-(4- piperazin-1-yl) 4 498.5 methanesulfonyl- butyric acid 498.3 piperazin-1-yl)-N- (intermediate 1) and methyl-butyramide Benzyl-methyl-amine (commercially available) 2-(3,4-Dichloro phenyl)-4-(4 2-(3,4-Dichloro- methanesulfonyl d ihrphenyl)-4-(4- piperazin-1-yl) 4 4 methanesulfonyl- butyric acid 5 566.5 F piperazin-1-yl)-N- (intermediate 1) and 566.3 methyl-N- (4- Methyl- (4 trifluoromethyl- trifluoromethyl benzyl)-butyramide benzyl)-amine (commercially available) 2-(3,4-Dichloro phenyl)-4-(4 2-(3,4-Dichloro- methanesulfonyl phenyl)-N-(3-fluoro- piperazin-1-yl) 6 546.5methoxy-benzyl)-4 butyric acid 5 566.5 F (4-methanesulfonyl- (intermediate 1) and 566.3 piperazin-(4- hll--4 methyl-butyramide methoxy-benz) methyl-amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 47 MW No MW structure Systematic Name starting materials found MH+ 2-(3,4-Dichoro C/ I phenyl)-4-(4 2-(3,4-Dichioro- methanesulfonyl phenyl)-N-(3-fluoro- piperazin-1-yl) ebenzyl)-4-(4- butyric acid 7butyric acid 516.2 \0 methanesulfonyl- (intermediate 1) and piperazin-l-yl) -N- (3-Fluoro-benzyl) methyl-butyramide methyl-amine (commercially available) 2-(3,4-Dichloro 0=3= 2-(3,4-Dichloro- phenyl)-4-(4 (methanesulfonyl p ehaenyl4 - piperazin-1-yl)-2 8 566.5 F piperazin-1-yl)- methyl-butyric acid 5663 0 / \ F pieainyl)-- (intermediate 2) and / ~ Fmethyl-N-(3 trifluoromethyl- 3-Trifluoromethyl ciP benzl)uyrme benzylamine C1 bnzy)-buyraide (commercially available) 2-(3,4-Dichloro N 2-(3,4-Dichloro- phenyl)-4-(4 phenyl) 4-(4- methanesulfonyl methanesulfonyl- piperazin-1-yl)-2 9 methyl-butyric acid 582. 582.5 /(intermediate 2) and HN-b F ~methyl-N-(3 -rfurmtoy 3 u trifluoromethox- Cl \ >F nzy) (3 beTylrmietoy / F benzyl)-butyramide benzylamine (commercially available) 2-(3,4-Dichloro Sphenyl)p-4-h(4 N-(3-Chloro-benzyl)- methanesulfonyl S2 -(3,4-dichloro- piperazin-1-yl)-2 10 546.9 phenyl)-4-(4- methyl-butyric acid 546.2 0 / 1 \ ~ methanesulfonyl (intermediate 2) and C piperazin-1-yl)-2,N- (3i-Chloro-benzyl) dimethyl-butyramide methyl-amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 48 MW No MW structure Systematic Name starting materials found MH+ 2=0 2-(3,4-Dichoro N2-(3,4-Dichloro- phenyl)-4-(4 phenyl)-N-(3- methanesulfonyl difluoromethoxy- piperazin- l)-2 'i ifuoomehoy- methyl-butyric acid 56. 11 564.5 0 __PO benzyl)-4-(4- (intermediate 2) and H N / methanesulfonyl C1 HN -- ) --- F piperazin-1-yl)-2- 3Dfurmtoy 0 methyl-butyramide benzylamine (commercially available) 2-(3,4-Dichloro phenyl)-4-(4 N- (4-Chloro-benzyl) - methanesulfonyl 2-(3,4-dichloro- piperazin-1-yl)-2 12 546.9 1 /0\ phenyl)-4-(4- methyl-butyric acid 546.1 methanesulfonyl- (intermediate 2) and C/ piperazin-l-yl)b-2,N- (4-Chloro-benzyl) dimethyl-butyramide methyl-amine (commercially available) N - o y 2-(3,4-Dichloro N F 2-(3,4-Dichloro- phenyl)-4-(4 Fmethanesulfonyl 0 phenylx- - piperazin-1-yl)-2 13 564. KN) F ifluoroethoxy- (intermDit cdro 13 5645benzyl)-4-(4p methyl-butyric a d / 0 \/ methanesulfonyl- iturmethoxy 1 piperazin-1-yl)-2 HN methyl-butyramide benzylamine (commercially available) 2-(3,4-Dichloro Ie phenyl)-4-(4 N-[m-(4-Chloro- methanesulfonyl K c, phenyl) -ethyl] -2- (3,4- piperazin- 1-yl) -2 14 546.b dichloro-phenyl) -4- (4- methyl-butyric acid 5462 0 / ~ methanesulfonyl- (intermediate 2) and /I_ \ piperazin-1-yl)-2- 1-(4-Chloro methyl-butyramide phenyl)-ethylamine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 49 MW No MW structure Systematic Name starting materials found MH+ 2- (3,4-Dichioro N phenyl) -4- (4 N-[Cyclopropyl-(4- methanesulfonyl methoxy-phenyl)- piperazin-l-yl)-2 CI-p - / N \methyl]-2-(3,4- methyl-butyric acid 15 568.6 -1 HNdichloro-phenyl)-4-(4- (intermediate 2) and 568.4 methanesulfonyl- C-Cyclopropyl-C-(4 piperazin-1-yl)-2- methoxy-phenyl) /P methyl-butyramide methylamine (commercially available) 2-(3,4-Dichloro phenyl)-4-(4 N-(2-Chloro-benzyl) - methanesulfonyl S2 -(3,4-dichloro- piperazin-1-yl)-2 16 546.9 phenyl)-4-(4- methyl-butyric acid 5462 methanesulfonyl- 2) and /IP 0" piperazin- l-yl)m-2,N- (2-Chloro-benzyl) dimethyl-butyramide methyl-amine (commercially available) o=7=o N( r 2-(3,4-Dichloro (:0 2-(3,4-Dichloro- phenyl)-4-(4 phenyl) 4-(4 methanesulfonyl /1 0 methanesulfonyl- piperazin-1-yl)-2 1 -dt methyl-butyric acid 7ipiperazin-1-yl)-2- (intermediate 2) and mmethyl-N-e(4 4-Trifluoromethoxy trifluoromethoxy-C l e benzyl)-butyramideamine F (commercially available) 2-(3,4-Dichloro

O(,D

0 oophenyl)-4-(4 hN-(4-Cyano-benzyl) - methanesulfonyl / 2-(3,4-dichloro- piperazin-1-yl)-2 18 523.5 phenyl)-4-(4- methyl-butyric acid 5233 c' methanesulfonyl- (intermediate 2) and piperazin-f1u-yl)o-2- 4-Aminomethyl H FN methyl-butyramide benzonitrile ci (commercially available) WO 2008/151969 PCT/EP2008/056878 - 50 MW No MW structure Systematic Name starting materials found MH+ =o2-(3,4-Dichioro N 2-(3,4-Dichloro- mhesulfonyl phenyl)-4-(4- hel methanesulfonyl- piperazin-1-yl)-2 19 825 0pmehaznsufoyl-- methyl-butyric acid 582.2 F epiperazin-1-yl)-2- (intermediate 2) and 0-1 methyl-N- (2 C -F trifluoromethoxy- 2-Trifluoromethoxy benzyfl)uomthyraid benzylamine -b bnzy)-buyraide (commercially available) 2-(3,4-Dichloro phenyl)-4-(4 Q F 2- (3,4-Dichloro- methanesulfonyl F phenyl)-N-(3-fluoro- piperazin-1-yl)-2 F 4-trifluoromethyl- methyl-butyric acid 20 584.5 0 ~ / F benzyl)-4-(4- (intermediate 2) and 584 C1 methanesulfonyl- 3-Fluoro-4 N piperazin-1-yl)2-2- trifluoromethyl c methyl-butyramide benzylamine (commercially available) o2-r(3,4-Dichloro yphenyl)--4-N(4 (N) N-3,~4-ifu oroty- m ta eufn l benzyl)-2-(3,4- piperazin-1-y)-2 21 567.4 dichloro-phenyl) -4i- (4- methyl-butyric acid 568 Ij / -I ~ methanesulfonyl- (intermediate 2) and Ci / \ - piperazin-1-yl)-2- 3,4-Dichloro -PH'N methyl-butyramide benzylamine Ci (commercially available) I I 2-(3,4-Dichloro 2-(3,4-Dichloro- phenyl)-4-(4 y 4methanesulfonyl mpeneslfony- piperazin-1-yl)-2 2 526.5 esulfo/yl\ methyl-butyric acid piperazin-1-yl)-2,N- (intermediate 2) and 584 / N- dimethyl-N-(4- Methyl-(4-methyl methyl-btymid benzylamine /butyramide (commercially available) WO 2008/151969 PCT/EP2008/056878 - 51 MW No MW structure Systematic Name starting materials found MH+ 2-(3,4-Dichloro 0=S= I2-(3,4-Dichloro- phenyl)-4-(4 -N phenyl)-4-(4- methanesulfonyl methanesulfonyl- piperazin-1-yl)-2 23 589.6sufoy methyl-butyric acid 58. 23 589.6 piperazin-1-yl)-2,N- (intermediate 2) and 589.3 l / \rdimethyl-N-(4- Methyl-(4-pyridin-4 NP pyridin-4-yl-benzyl) - ylbnl)-me ei / utyrmideyl-benzyl)-ammne Ci/ butyramide (commercially available) o2-r(3,4-Dichloro N phenyl)-4-(4 2-(3,4-Dichloro- methanesulfonyl F phenyl) -N-(3-fluoro- piperazin--yl)-2 24 530.5 benzyl)-4-(4- methyl-butyric acid 5302 0 / ~ methanesulfonyl- (intermediate 2) and / p piperazin-1-yl)-2,N- 3-Fluoro-benzyl) dimethyl-butyramide methyl-amine ci (commercially available) =i 2-(3,4-Dichloro N phenyl)p-4-h(4 2-(3,4-Dichloro- methanesulfonyl N)F \0 phenyl)-N-(3-fluoro- piperazin-1-yl)-2 4-methoxy-benzyl)-4- methyl-butyric acid 25 560.5 / ~ 0 / ""' (4-methanesulfonyl- (intermediate 2) and 560.3 CI - piperazin-1-yl)-2,N- (3-Fluoro-4 dimethyl-butyramide (commercially available) 2-(3,4-Dichloro phenyl)-4-(4 F-F 2-(3,4-Dichloro- methanesulfonyl N 0 phenyl) -N-(4- piperazin-1-yl)-2 difluoromethoxy-3 - methyl-butyric acid 26 608.5 0 / 0 methoxy-benzyl)-4-(4- (intermediate 2) and 608 Ci / \ methanesulfonyl- (4-Difluoromethoxy piperazin-1-yl)-2,N- 3-methoxy-benzyl) Ci dimethyl-butyramide methyl-amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 52 MW No MW structure Systematic Name starting materials found MH+ O=LU2- (3,4-Dichioro 2-34Dihoo phenyl)-4-(4 FN pheny)4-(4hlr- methanesulfonyl N0 FF methahneslfonyl4- piperazin-1-yl) -2 27 5 F . methyl-butyric acid566.3 o756. piperazin-1-yl) -2- (intermediate 2) and 56. / \ methyl-N- (4- 4-Trifluoromethyl p Itrifluoromethyl-beylin HN benzyl) -butyramide (coymmel C1(cmecal available) 2-(3,4-Dichloro Sphenyl)h-4-e(4 F 2- (3,4-Dichloro- methanesulfonyl N F phenyl)-4-(4- piperazin-1-yl)-2 28505F methanesulfonyl- methyl-butyric acid 28 58.5 ~0 piperazin- 1-yl) -2,N- (intermediate 2) and 580.3 dimethyl-N-(4- Methyl-(4 / trifluoromethyl- trifluoromethyl CI benzyl)-butyramide benzyl)-amine (commercially available) 2-(3,4-Dichloro I phenyl)-4-(4 N-(4-Chloro-benzyl) - methanesulfonyl N C -(3,4-dichloro- piperazin-1-yl)-2 29 532.9 phenyl)-4-(4- methyl-butyric acid 53 0 /methanesulfonyl- (intermediate 2) and / - piperazin-1-yl)-2- 4-Chloro HN-O methyl-butyramide benzylamine (commercially available) 2-(3,4-Dichloro I phenyl)-4-(4 -(4-Chloro-3-fluoro- methanesulfonyl / N- benzyl)-2-(3,4- piperazin-1-yl)-2 30 550.9 dichloro-phenyl) -4- (4- methyl-butyric acid 552.3 F methanesulfonyl- (intermediate 2) and Ci /- piperazin-1-yl)-2- 4-Chloro-3-fluoro H methyl-butyramide benzylamine CI (commercially available) WO 2008/151969 PCT/EP2008/056878 - 53 MW No MW structure Systematic Name starting materials found MH+ -- ( 2-(3,4-Dichoro N 412- (3,4-Dichioro- phenyl) -4- ((R)-4 phenyl) -N-(3-fluoro- methanesulfonyl-3 0 4-methoxy-benzyl)-4 4-mpethy-bnyl) methyl-piperazin- 1 31 4 ~ /"' ((R-4-yl)-2-methyl-butyric ((R)-4- l /1 \74.5 methanesulfonyl-3- acid (intermediate 3) 574.3 methyl-piperazin-1- and (3-Fluoro-4 F yl)-2,N-dimethyl- methoxr-benzj) F / butyramide aiemethyl aie(commercially available) 0=ru 2-(3,4-Dichloro N ~"N-[Cyl4 phenyl)-4-((R)-4 S[Cypopyl- 4 methanesulfonyl-3 N 0 meth]-pheny- methyl-piperazin-1 - 0 mth nyl-(34- yl)-2-methyl-butyric 32 582.6 0((oRo- y acid (intermediate 3) 584.1 ((R)-4sl 3- and C-Cyclopropyl methanefon-3- C- (4-methoxy methylraz - phenyl) butyramide methylamine amne(commercially available) T =0 2- (3,4-Dichloro N2-(3,4-Dichloro- phenyl)-4-((R)-4 -phenyl)- methanesulfonyl-3 hetyl -2(4uor- methyl-piperazin-1 33 -tRifluoy)-4- - yl)-2-methyl-butyric HN2h/\enzy l -- acid (intermediate 3) 612.2 methyl-piperazin-1- and(4-Fluoro-3 /\ F y)2dmethylzn - trifluoromethyl F yl)benzyl)-methyl F butyramide amine (commercially available) N AA2-(3,4-Dichloro N- (3,5-Bis- phenyl)-4-((R)-4 N trifluoromethyl- methanesulfonyl-3 benzyl)-2-(3,4- methyl-piperazin-1 1 dichloro-phenyl) -4- yl)-2-methyl-butyric 34 648.5 HN ((R)-4- acid (intermediate 3) 648.1 /+ F methanesulfonyl-3- and 3,5-Bis F F methyl-piperazin-1- trifluoromethyl F yl)m-2-methyl- benzylamine butyramide (commercially available) WO 2008/151969 PCT/EP2008/056878 - 54 MW No MW structure Systematic Name starting materials found MH+ 2-(3,4-Dichoro K) 2- (3,4-Dichioro- phenyl) -4- ((R)-4 N phenyl)-N-(4- methanesulfonyl-3 o 0 difluoromethoxy-3- methyl-piperazin-1 622.6 ~' / "' methoxy-benzyl)-4- yl)2methylbutyric 35 62.6(R)4 acid (intermediate 3) 622.2 __ ~((R)-4-an(4 m ethanesulfonyl-3- D l r e o -o o F methyl-piperazin-1- methoxy- yl)-2,N-dimethyl- methy-amne butyrmide(commercially available) 0 f= 2-(3,4-Dichloro 0 2- (3,4-Dichloro- phenyl)-4-((R)-4 N phenyl)-4- ( (R)-4 methanesulfonyl-3 CI 0 methanesulfonyl-3- methyl-piperazin-1 36 540.6 C / \ methyl-piperazin-1- yl)-2-methyl-butyric 5404 - acid (intermediate 3) / yl)-2,-dimethylm- and Methyl-(4 butyramide methyl-benzyl) amine (commercially available) 2-(3,4-Dichloro N ,% 2-(3,4-Dichloro- phenyl)-4-((R)-4 N phenyl)-N-(4- methanesulfonyl-3 Sdimethylamino- methyl-piperazin-1 37 55.6 c N benzyl)-4-((R)-4- yl)-2-methyl-butyric ,methanesulfonyl-3- acid (intermediate 3) 555.2 (4methyl-enyl)- and (4 y2methylan- Aminomethyl butyramide phenyl)-dimethyl amine (commercially available) 2-(3,4-Dichloro p 2-(3,4-Dichloro- phenyl)-4-((R)-4 N phenyl)-4-((R)-4- methanesulfonyl-3 methanesulfonyl-3- methyl-piperazin-1 38 564.5 C1 / ~methyl-piperazin-1- yl)-2-methyl-butyric 5643 b 44- HN yl)-2-methyl-N- acid (intermediate 3) quinoxalin-6- and C-Quinoxalin-6 ylmethyl-butyramide yl-methylamine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 55 MW No MW structure Systematic Name starting materials found MH+ T =N 2-(3,4-Dichoro NN-(4-Chloro-3- pheflyl)>4-(R)-4 trifluoromethyl-ulfonyl-3 t0benzyl)-2 - methyl-piperazin-1 dichloro-phenyl)-4- yl)-2-methyl-butyric 39 dichlo(Rhey)-4- acid (intermediate 3) 628.2 629.0 - / ~~((R)-4- ad(-hoo3 methanesulfonyl-3- trifluoroty F methyl-piperazin-1- benzyl C1 yl)-2,N-dimethyl- -methyl-amine butyramide (commercially available) 2-(3,4-Dichloro phenyl)-4-((R)-4 N 2- (3,4-Dichloro- methanesulfonyl-3 phenyl) -N-(3-fluoro- methyl-piperazin-1 4-trifluoromethyl- yl)-2-methyl-butyric 4 615benzyl)-4-((R)-4- acid (intermediate 3) F methanesulfonyl-3- and (3-Fluoro-4- 62.2 40 65 methyl-piperazin-1- trifluoromethyl FF yl)-2,N-dimethyl- benzyl) butyramide -methyl-amine (commercially available) O= 2- (3,4-Dichloro N N-(3,4-Dichloro- phenyl)-4-((R)-4 C) benzyl) -2- (3,4- methanesulfonyl-3 ci dichloro-phenyl) -4- methyl-piperazin- 1 41 95. ~ ~ 0 ((R)-4- yl)-2-methyl-butyric 59. 4159. N- methanesulfonyl-3- acid (intermediate 3) 59. / __methyl-piperazin- 1- and (3,4-Dichloro \/ci yl)-2,N-dimethyl- benzyl)-methyl C1butyramide amine (commercially available) 0 f= 2- (3,4-Dichloro CNK N-(3,4-Dichloro- phenyl)-4-((R)-4 N benzyl) -2- (3,4- methanesulfonyl-3 dichloro-phenyl) -4- methyl-piperazin- 1 42 81. ~ ~ 0 ((R)-4- yl)-2-methyl-butyric 58 4258. HN_ methanesulfonyl-3- acid (intermediate 3) 58 methyl-piperazin- 1- and 3,4-Dichloro \/ci yl) -2-methyl- benzylamine C1butyramide (commercially available) WO 2008/151969 PCT/EP2008/056878 - 56 MW No MW structure Systematic Name starting materials found MH+ 2- (3,4-Dichioro 2-(,-ihoo phenyl) 4((R)-4 N34-cor- methanesulfonyl-3 phenyl) -N-(3- methyl-piperazin-1 / ~~~ 0 ~~difluoromethoxy- y 2mty-uyi C1 0 ~~~~benzyl)-4-((R)-4- y)2mty-uyi 43 578.5 - Nbny)4(R-- acid (intermediate 3) 578.1 methanesulfonyl-3- and 3 /\ methyl-piperazin-1- Difluoromethoxy yl)-2-methyl- benzylamine Fbutyramide (commercially available) 0 f= 2-(3,4-Dichloro 0 2- (3,4-Dichloro- phenyl)-4-((R)-4 N N methanesulfonyl-3 phenytl (5-flor- methyl-piperazin-1 2-trifHFzloromethy- yl)-2-methyl-butyric 4 8 F bethnenzy fyl) -- acid (intermediate 3) 598.2 methanelfonl-3- and 5-Fluoro-2 methyl - trifluoromethyl / yl)-2-mehyl-benzylamine F ~~butyramide ezlmn (commercially available) o2-r(3,4-Dichloro Nphenyl)--4-N(-(R)-4 N 2-(3,4-Dichloro- methanesulfonyl-3 0 phenyl)-4-((R)-4- methyl-piperazin-1 F methanesulfonyl-3- yl)-2-methyl-butyric methyl-piperazin-1- acid (intermediate 3) 580.1 yl)-2-methyl-N-(4- and 4 - F trifluoromethyl- Trifluoromethyl SF benzyl)-butyramide benzylamine F (commercially available) 2-(3,4-Dichloro l2-(- phenyl)-4-((R)-4 (0 (3,4y-loro- methanesulfonyl-3 methyl-piperazin-1 5-trifluoromethyl- yl)-2-methyl-butyric 46 598.5 /benzyl)-4-((R)-4- acid (intermediate 3) 598.1 S HN F methanesulfonyl-3- and 2-Fluoro-5 methyl-piperazin-1- tilooehl F F trifluoromethyl yl)-2-methyl-benzylamine F butyramide ezlmn (commercially available) WO 2008/151969 PCT/EP2008/056878 - 57 MW No MW structure Systematic Name starting materials found MH+ O~i=U2- (3,4-Dichioro N- [1-(4-Chioro- phenyl) -4- ((R)-4 N \ phenyl) -ethyl] -2- (3,4- methanesulfonyl-3 N C I dichloro-phenyl)-4- methyl-piperazin-1 47 561.0 ((R)-4- yl)-2-methyl-butyric 562.5 0 / \ methanesulfonyl-3- acid (intermediate 3) / ""' HN - methyl-piperazin-l- and 1-(4-Chloro HN- yl)-2-methyl- pey)ehlmn butyramide (commercially available) 2-(3,4-Dichloro 2-(3,4-Dichloro- phenyl)-4-((R)-4 N phenyl)-4- ( (R)-4 methanesulfonyl-3 ci methanesulfonyl-3- methyl-piperazin-1 48 556.6 / j 0 methyl-piperazin-1- yl)-2-methyl-butyric 556. ci - N yl)-N-(3-methoxy- acid (intermediate 3) / benzyl) -2,N-dimethyl- and (3-Methoxy 0\ butyramide benzyl)-methyl amine (commercially available) Or0 2-(3,4-Dichloro N-(2-Chloro-benzyl)- phenyl)-4-((R)-4 2-(3,4-dichloro- methanesulfonyl-3 N5 phenyl)-4-((R)546 methyl-piperazin- 49 561y0 0 methanesulfonyl-3- y)-2-methyl-butyric 5603 ci~ _ ,methyl-piperazin-l acid (intermediate 3) N C1 and (2-Chloro byl)-2,N-dimethyl- benzyl)-methyl /butyramide amine (commercially available) 2-(3,4-Dichloro 2-(3,4-Dichloro- phenyl)-4-((R)-4 N phenyl) -N- [1- (3,4- methanesulfonyl-3 dichloro-phenyl) - methyl-piperazin-1 50 595.4 c,0 ethyl] -4-((R)-4- yl)-2-methyl-butyric 5963 S HN_ methanesulfonyl-3- acid (intermediate 3) methyl-piperazin- 1- and 1-(3,4-Dichloro \/ci yl)b-2-methyl- phenyl)-ethylamine mbutyramide (commercially available) WO 2008/151969 PCT/EP2008/056878 - 58 MW No MW structure Systematic Name starting materials found MH+ =2 2-(3,4-Dichoro N).h nl phenyl)-4-((R)-4 S2- (3,4-Dichioro- methanesulfonyl-3 phenyl)-4-((R)-4- methyl-piperazin-1 51 59.5~ ~ 0 methanesulfonyl-3- yl)-2-methyl-butyric 51565HN methyl-piperazin-1- acid (intermediate 3) 596.2 yl)-2-methyl-N-(3- and 3 F trifluoromethoxy- Trifluoromethoxy F benzyl)-butyramide benzylamine F (commercially available) 2-(3,4-Dichloro N ~N-(4-Chloro-3-fluoro- phenyl)-4-((R)-4 Sbenzyl) -2- (3,4- methanesulfonyl-3 dichloro-phenyl) -4- methyl-piperazin-1 52 564.9 ~ / ~ 0 ((R)-4- yl)-2-methyl-butyric 5643 HN methanesulfonyl-3- acid (intermediate 3) methyl-piperazin- 1- and 3-Chloro-4 /enyl)-2-methyl- fluoro-benzylamine butyramide (commercially available) 2-(3,4-Dichloro phenyl)-4-((R)-4 N 2-(3,4-Dichloro- methanesulfonyl-3 (phenyl)-4-((R)-4- methyl-piperazin-1 /1 HN methanesulfonyl-3- yl)-2-methyl-butyric 53 596.5 - HN methyl-piperazin-1- acid (intermediate 3) 596.2 yl)-2-methyl-N-(4- and 4 - F trifluoromethoxy- Trifluoromethoxy OF benzyl)-butyramide benzylamine F (commercially available) =f 0 2-(3,4-Dichloro N-(4-Chloro-3- phenyl)-4-((R)-4 N trifluoromethyl- methanesulfonyl-3 benzyl)-2-(3,4- methyl-piperazin-1 50 dichloro-phenyl)-4- yl)-2-methyl-butyric 4 614.9 HN ((R)-4- acid (intermediate 3) 614.3 methanesulfonyl-3- and 4-Chloro-3 S/ F methyl-piperazin-1- trifluoromethyl fu yl)o-2-methyl- benzylamine CI butyramide (commercially available) WO 2008/151969 PCT/EP2008/056878 - 59 MW No MW structure Systematic Name starting materials found MH+ 07-12- (3,4-Dichioro )"'61phenyl) -4- ((R)-4 N2- (3,4-Dichioro- methanesulfonyl-3 S0phenyl) -4- ((R) -4- methyl-piperazin- 1 C1methanesulfonyl-3- yl)-2-methyl-butyric 55 594.5 -methyl-piperazin-1- acid (intermediate 3) 594.2 yl)-2,N-dimethyl-N- and Methyl-(4 F (4-trifluoromethyl- trifluoromethyl F benzyl) -butyramide benzyl) -amine F (commercially available) 2-(3,4-Dichloro 0N- (4-Chloro-benzyl) - phenyl)-4-((R)-4 N 2- (3,4-dichloro- methanesulfonyl-3 phenyl)-4- ( (R)-4- methyl-piperazin-1 56 561.0 c / ~ methanesulfonyl-3- yl)-2-methyl-butyric 5603 methyl-piperazin-1- acid (intermediate 3) and (4-Chloro /ezyl)-butyramide benzyl)-methyl amine (commercially available) 2-(3,4-Dichloro NN- (4-Cyano-benzyl) - phenyl) -4- ((R)-4 N2-(3,4-dichloro- methanesulfonyl-3 /phenyl)-4-((R)-4- methyl-piperazin-1 57 537.5 C' methanesulfonyl-3- yl)-2-methyl-butyric 567.3 methyl-piperazin-1- acid (intermediate 3) yl)-2-dmethyl- and 4-Aminomethyl yl) 2-mehyl-benzonitrile butyramidebezl-th buyne (commercially available) 2-(3,4-Dichloro N 4phenyl)-4-((R)-4 N2-(3,4-Dichloro- methanesulfonyl-3 phenyl)-4-((R)-4- methyl-piperazin-1 5C methanesulfonyl-3- yl)-2-methyl-butyric 58 594.5 / methyl-piperazin-1- acid (intermediate 3) 594.2 yl)-2,N-dimethyl-N- and Methyl-t(3 "F (3-trifluoromethyl- trifluoromethyl F benzyl) -butyramide benzyl)-amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 60 MW No MW structure Systematic Name starting materials found MH+ 0S0II~ 2- (3,4-Dichioro (N).0'1 N- (3 -Chloro-benzyl) - phenyl) -4- ((R)-4 N 2-(3,4-dichloro- methanesulfonyl-3 ci phenyl) -4- ((R)-4- methyl-piperazin- 1 59 561.0 0 yl)-2-methyl-butyric -1 Nmethanesulfonyl-1- acid (intermediate 3) Smethyl-piperazin-1-(3-Choro yl)-2,N-dimethyl ciamine (commercially available) 2-(3,4-Dichloro N(,-i o ~phenyl)-4-((R)-4 N phenyl) -N-(3-fluoro- methanesulfonyl-3 c benzyl)-4-((R)-4- methyl-piperazin-1 60 544.5 / 1 0 methanesulfonyl-3- yl)-2-methyl-butyric 544.2 methyl-piperazin-1- acid (intermediate 3) pe and (3-Fluoro / -2,N- dey benzyl)-methyl amine (commercially available) 2-(3,4-Dichloro N 2-(3,4-Dichloro- phenyl)-4-((S)-4 -N phenyl)-N-(-o(S)r- methanesulfonyl-3 6 / el0 methanesulfonyl-3- methyl-piperazin-1 61 603.65 methyl-piperazin-1- yl)-2-methyl-butyric 63.3 O' methy-piperazin-1- acid (intermediate 4) y (4-pyridin-4n-yl-yl(4 / benzyl) -butyid pyridin-4-yl-benzyl) N amine (commercially available) N 2-(3,4-Dichloro N 2-(3,4-Dichloro- phenyl)-4-((S)-4 phenyl)--(-fluoro- methanesulfonyl-3 pmethn syl onyl--- methyl-piperazin-1 64 . (methy-ez- yl)-2-methyl-butyric 6 57./ \l)2Ns- tyl-N- acid (intermediate 4) 574.3 methanelfon- and (3-Fluoro-4 (4m-pirin- - pyinmethoxy-benzyl) F ,0 yl)-2,N-dimethyl- methyl-amine butyramide (commercially available) WO 2008/151969 PCT/EP2008/056878 - 61 MW No MW structure Systematic Name starting materials found MH+ o=O 2- (3,4-Dichioro N-[Cyclopropyl-(4- phenyl)-4-((S)-4 methoxy-phenyl)- methanesulfonyl-3 N methyl]-2-(3,4- methyl-piperazin-1 Stdichloro-phenyl)-4- yl)-2-methyl-butyric 63 582.6 C1 0 ((Sdchor-hnl)- acid (intermediate 4) 584.2 ((S)-4- adCCcorpl HN methanesulfonyl-3- C-C4-metoy methyl-piperazin-1- pheny yl)-2-methyl- meylmn butyrmide(commercially available) O T=0 2-(3,4-Dichloro N phenyl)-4-((S)-4 N 2- (3,4-Dichloro- methanesulfonyl-3 phenyl) -N-(4-fluoro- methyl-piperazin-1 0 3 -trifluoromethyl- yl)-2-methyl-butyric 5benzyl)-4-((S)-4- acid (intermediate 4) 4 5 methanesulfonyl-3- and (4-Fluorop- 3 84.2 F methyl-piperazin-1- trifluoromethyl F yl)-2,N-dimethyl- benzyl)-methyl butyramide amine (commercially available) 07=02- (3,4-Dichloro N:rN-(3,5-Bis- phenyl)-4-((S)-4 N trifluoromethyl- methanesulfonyl-3 S0 benzyl)-2-(3,4- methyl-piperazin-1 -1 dichloro-phenyl) -4- yl) -2-methyl-butyric 65 648.5 HN ((S)-4- acid (intermediate 4) 648.2 \ / F methanesulfonyl-3- and 3,5-Bis F F methyl-piperazin- 1- trifluoromethyl F F yl) -2-methyl- benzylamine butyramide (commercially available) o2-r(3,4-Dichloro LiEOO 2- (3,4-Dichloro- phenyl) -4- ((S) -4 N phenyl)-N-(4- methanesulfonyl-3 / C 0 difluoromethoxy-3- methyl-piperazin-1 methoxy-benzyl)-4- yl)-2-methyl-butyric 66 622.6 t((S)-4- acid (intermediate 4) 622.3 methanesulfonyl-3-and (4 _ /_<F methanpeslfon-3- Difluoromethoxy-3 -0 l-methyl-piperazin- methoxy-benzyl) yl)-2,N-dimethyl- methyl-amine commercially available) WO 2008/151969 PCT/EP2008/056878 - 62 MW No MW structure Systematic Name starting materials found MH+ 2-(3,4-Dichloro N 2-(3,4-Dichloro- phenyl)-4-((S)-4 N phenyl)-4-((S)-4- methanesulfonyl-3 methanesulfonyl-3- methyl-piperazin-1 67 540.6 ci/ \ methyl-piperazin-1- yl)-2-methyl-butyric 540.4 yl)-2,-dimethyl- N- acid (intermediate 4) yl)-2,N-dimethyl-N- and Methyl-(4 (4-methyl-benzyl)- methyl-benzyl) butyramide amine (commercially available) 07 -1 2-(3,4-Dichloro 002- (3,4-Dichloro- phenyl) -4- ((S) -4 N phenyl)-N-(4- methanesulfonyl-3 dimethylamino- methyl-piperazin-1 68 555.6 -- HN benzyl)-4-((S)-4- yl)-2-methyl-butyric methanesulfonyl-3- acid (intermediate 4) 555.2 methyl-piperazin-1- anomt yl)-2-methyl- phen methyl butyrmide amine (commercially available) 2-(3,4-Dichloro N N-(4-Chloro-3- phenyl)-4-((S)-4 N)"Otriluormetyl- methanesulfonyl-3 Nmthaesfon trilo - methyl-piperazin-1 benzl)o-2-(3,4- yl)-2-methyl-butyric 69 629.0 / dichSoo-pn acid (intermediate 4) 630.3 / F ((eS)-4onyl-3- and (4-Chloro-3 methanefonl-A- trifluoromethyl -1 F -Ndmethylzn - benzyl) -methyl ci )2,Ndietphemnyl-iethl butyramideamn amne(commercially available) 2- (3,4-Dichloro phenyl) -4- ((S) -4 N 2- (3,4-Dichloro- methanesulfonyl-3 0 phenyl) -N- (3-fluoro- methyl-piperazin- 1 c 4-trifluoromethyl- yl)-2-methyl-butyric 70 6257benzyl)-4-((S)-4- acid (intermediate 4) 61. /_\ F methanesulfonyl-3- and (3-Fluoro-4- 61. 70625-b F methyl-piperazin- 1- trifluoromethyl FF yl)-2,N-dimethyl- benzyl) butyramide -methyl-amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 63 MW No MW structure Systematic Name starting materials found MH+ 2-(3,4-Dichoro NN-(3,4-Dichloro- phenyl)-4-((S)-4 benzyl)-2-(3,4- methanesulfonyl-3 dichloro-phenyl)-4- methyl-piperazin-1 71 595.4 c / 0 ((S)-4- yl)-2-methyl-butyric 596.2 N- methanesulfonyl-3- acid (intermediate 4) / 7 _methyl-piperazin-1- and (3,4-Dichioro \ 1 / ci yl)-2,N-dimethyl- benzyl)-methyl C1butyramide amine (commercially available) 2-(3,4-Dichloro N- (3,4-Dichloro- phenyl)-4-((S)-4 N benzyl) -2-(3,4- methanesulfonyl-3 dichloro-phenyl) -4- methyl-piperazin-1 72 581.4 c/- 0 ((S)-4- yl)-2-methyl-butyric 582 HN__ methanesulfonyl-3- acid (intermediate 4) methyl-piperazin-1- and 3,4-Dichloro /c yl)-2-methyl- benzylamine butyramide (commercially available) i2--(3,4-Dichloro d2-(3,4-Dichloro- phenyl)-4-((S)-4 phenyl)-N-(3 methanesulfonyl-3 CI0 difluoromethoxy- methyl-piperazin-1 benzyl)-4-((S)-4- yl)-2-methyl-butyric 73 578.5 - Nacid (intermediate 4) 578.1 methanesulfonyl-3- and 3 _0 methyl-piperazin-1- Difluoromethoxy Syl) -2-methyl- benzylamine butyramide (commercially available) O, 2-(3,4-Dichloro el2-(3,4-Dichloro- phenyl)-4-((S)-4 N p N- methanesulfonyl-3 phenyl (5-fl- methyl-piperazin-1 2-trifloromethyl- yl)-2-methyl-butyric 74 598.5 HN F beten fyl-4(S-- acid (intermediate 4) 598.3 methanelfonlm- and 5-Fluoro-2 methylr - trifluoromethyl benzylamine F butyramide (commercially available) WO 2008/151969 PCT/EP2008/056878 - 64 MW No MW structure Systematic Name starting materials found MH+ 2h2-l(3,4-Dichoro p h n l -ph enyl)-4-((S)-4 N 2-(3,4-Dichioro- methanesulfonyl-3 0 phenyl)-4-((S)-4- methyl-piperazin-1 c)methanesulfonyl-3- yl)-2-methyl-butyric 75 580.5 - Nmethyl-piperazin-1- acid (intermediate 4) 580 yl)-2-methyl-N-(4- and 4 F trifluoromethyl- Trifluoromethyl F benzyl)-butyramide benzylamine F (commercially available) 2-(3,4-Dichloro NO2-(o phenyl)-4-((S)-4 methanesulfonyl-3 N phenyl) -N-(2-fluoro- methyl-piperazin-1 S5-trifluoromethyl- -2-methyl-butyric 76 598.5 / 0N b e yl)--)-4- acid (intermediate 4) 58. FHN methanefonl-3- and 2-Fluoro-5 methyl-piperazn-- trifluoromethyl nyl)-2-mty d benzylamine F butyramide (commercially available) r2-o(3,4-Dichloro N-[1-(4-Chloro- phenyl)-4-((S)-4 phenyl)-ethyl] -2-(3,4- methanesulfonyl-3 N C dichloro-phenyl)-4- methyl-piperazin-1 77 561.0 C ((S)-4- yl)-2-methyl-butyric 5603 JUI) 0 / ~ methanesulfonyl-3- acid (intermediate 4) /1 \ - methyl-piperazin-1- and 1-(4-Chloro Nyl)-2-methyl- phenyl)-ethylamine butyramide (commercially available) =0 2-(3,4-Dichloro -(,-ihoo phenyl)-4-((S)-4 C T phenyl4-((S)-4r- methanesulfonyl-3 N C meheulfoy-3()- methyl-piperazin-1 tfyl)u-2-methyl-butyric 78 556.6 Cmethyl-piperazin-1- acid (intermediate 4) 556.1 / yl)N-3-mthxy and (3-Methoxy butyramide benzyl)-methyl amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 65 MW No MW structure Systematic Name starting materials found MH+ 2-(3,4-Dichloro CN N-(2-Chloro-benzyl)- mhny N2- (3,4-dichioro- methanesulfonyl-3 C7 phenyl)-4-((S)-4- methyl-piperazin-1 79 561.0 methanesulfonyl-3- yl)-2-methyl-butyric 562.3 c' N methyl-piperazin-1- acid (intermediate 4) yl)-,N-imetyl- and (2-Chioro N y) -,ramiethyl- benzyl)-methyl amine (commercially available) r2-o(3,4-Dichloro C: 2- (3,4-Dichloro- phenyl) -4- ((S) -4 phenyl)-N-[1-(3,4- methanesulfonyl-3 dichloro-phenyl)- methyl-piperazin-1 ethyl] -4-((S)-4- yl)-2-methyl-butyric Smethanesulfonyl-3- acid (intermediate 4) /1 \methyl-piperazin-1- and 1-(3,4-Dichloro HN yl)-2-methyl- phenyl)-ethylamine butyramide (commercially available)

()

0 0 2-(3,4-Dichloro phenyl)-4-((S)-4 N> 2-(3,4-Dichloro- methanesulfonyl-3 Sphenyl) -4-((S) -4- methyl-piperazin-1 81 596.5 /0 methanesulfonyl-3- yl)-2-methyl-butyric - HN methyl-piperazin-1- acid (intermediate 4) 596.3 ayl)-2-methyl-N-(3- and 3 O\ Ftrifluoromethoxy- Tiformto F< benzyl) -butyramide bezylamietoy phenl-ylamine (commercially available) o== i2--(3,4-Dichloro N-(4-Chloro-3-fluoro- phenyl)-4-((S)-4 N benzyl) -2- (3,4- methanesulfonyl-3 dichloro-phenyl)-4- methyl-piperazin- 82 564.9 ~ /0((S)-4- yl)-2-methyl-butyric - HN methanesulfonyl-3- acid (intermediate 4) methyl-piperazin-1- and 3-Chloro-4 yl)-2-methyl- fluoro-benzylamine bnybutyramidebezlmn F C bu(commercially available) WO 2008/151969 PCT/EP2008/056878 - 66 MW No MW structure Systematic Name starting materials found MH+ -2-((3,4-Dichoro phenyl)-4-((S)-4 N 2-(3,4-Dichioro- methanesulfonyl-3 phenyl)-4-((S)-4- methyl-piperazin-1 / \: methanesulfonyl-3- yl)-2-methyl-butyric 83 596.5 - N methyl-piperazin-1- acid (intermediate 4) 596.2 yl)-2-methyl-N-(4- and 4 - F trifluoromethoxy- Trifluoromethoxy O+F OF benzyl)-butyramide benzylamine F (commercially available) 2-(3,4-Dichloro N- (4-Chloro-3- phenyl)-4-((S)-4 trifluoromethyl- methanesulfonyl-3 benzyl)-2-(3,4- methyl-piperazin-1 /\ 0 dichloro-phenyl) -4- yl)-2-methyl-butyric 84 614.9 IHN ((S)-4- acid (intermediate 4) 614.3 F methanesulfonyl-3- and 4-Chloro-3 F methyl-piperazin-1- trifluoromethyl ben yl)--2-methyl- benzylamine CI butyramide (commercially available) -2-3(3,4-Dichloro bezy -phenyl)-4-((S)-4 N 2-(3,4-Dichloro- methanesulfonyl-3 0 phenyl)-4-((S)-4- methyl-piperazin-1 methanesulfonyl-3- yl)-2-methyl-butyric 85 594.5 methyl-piperazin-1- acid (intermediate 4) 594.2 yl)-2,N-dimethyl-N- and Methyl-(4 F (4-trifluoromethyl- trifluoromethyl F benzyl) -butyramide benzyl) -amine F (commercially available) 2-(3,4-Dichloro N-(4-Chloro-benzyl)- phenyl)-4-((S)-4 2- (3,4-dichloro- methanesulfonyl-3 C0 phenyl) -4-( (S)-4 methyl-piperazin-1 86 561.0 C1 / \ethan- yl)-2-methyl-butyric 5625 methanefon-3- acid (intermediate 4) and (4-Chloro yl)t-2,N-dimethyl- benzyl)-methyl butyramide amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 67 MW No MW structure Systematic Name starting materials found MH+ 0=, 2-(3,4-Dichoro (N)Yn phenyl)-4-((S)-4 2-(3,4-Dichioro- methanesulfonyl-3 N phenyl)-4-((S)-4- methyl-piperazin-1 87 59.5~ ~ 0 methanesulfonyl-3- yl)-2-methyl-butyric 87 54.5methyl-piperazin-1- acid (intermediate 4) 594.3 / _ F yl)-2,N-dimethyl-N- and Methyl-(3 F (3-trifluoromethyl- trifluoromethyl ""/F benzyl)-butyramide benzyl)-amine (commercially available) O0 2-(3,4-Dichloro N_-(3-Chloro-benzyl)- phenyl)-4-((S)-4 N 2- (3,4-dichloro- methanesulfonyl-3 ci phenyl) -4-( (S)-4 methyl-piperazin-1 88 561.0 / ~ 0 methanesulfonyl-3- yl)-2-methyl-butyric 560.3 -bN methyl-piperazin-1- acid (intermediate 4) and (3-Chloro be yl)-butyramide benzyl)-methyl amine (commercially available) Nl0 2-(3,4-Dichloro h)2-(3,4-Dichloro- phenyl)-4-((S)-4 N phenyl)-N-(3-fluoro- methanesulfonyl-3 ci benzyl)-4-((S)-4- methyl-piperazin-1 cci 89 544.5 0 ~~~~methanesulfonyl-3- y)2mty-uyi 4. Smethyl-piperazin-1- acid (intermediate 4) and (3-Fluoro / yl)-2-dime benzyl)-methyl amine (commercially available) N 2-(3,4-Dichloro phenyl)-4-((S)-4 N p 2-l(3,4-Dichloro- methanesulfonyl-3 0 phenyl)-4-((S)-4- methyl-piperazin-1 C8 /44.5methanesulfonyl-3- yl)-2-methyl-butyric 90 595.5 methyl-piperazin-1- acid (intermediate 4) 5952 -yl)-2,N-dimethyl-N- and C-(6 N (6-trifluoromethyl- Trifluoromethyl F FF pyridin-3-ylmethyl) - pyridin-3-yl) butyramide methylamine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 68 MW No MW structure Systematic Name starting materials found MH+ -2-((3,4-Dichoro phnlphenyl)-4-((S)-4 2- (3,4-Dichoro- methanesulfonyl-3 phenyl)-4-((S)-4- methyl-piperazin-1 Ci / ' H methanesulfonyl-3- yl)-2-methyl-butyric 91 581.5 methyl-piperazin-1- acid (intermediate 4) 581 yl)-2-methyl-N-(6- and C-(6 N trifluoromethyl- Trifluoromethyl pyridin-3-ylmethyl)- -3-yl) butyramide methylamine (commercially available) 2-(3,4-Dichioro- 2-(3,4-Dichloro phenyl) -4- ( (R)-4- phenyl)-4-((R)-4 N methanesulfonyl-3- methanesulfonyl-3 92 581.5 C1 / \ methyl-piperazin-1- methyl-piperazin-1 - NH yl)-2-methyl-N-(6- yl)-2-methyl-butyric trifluoromethyl- acid (intermediate 3) pyridin-3-ylmethyl)- and (commercially N F butyramide available) F F Example 93 (S or R)-N-(3,4-Dichloro-benzyl)-2-(3,4-dichioro-phenyl)-4-((R)-4-methanesulfonyl-3 methyl-piperazin-l-yl)-2-methyl-butyramide MS(m/e): 581.4 (MH) (or y diastereoisomer) 0H and Example 94 (R or )-N-(3,4-Dichloro-benzyl)-2-(3,4-dichioro-phenyl)-4-(p(R)-4-methanesulfonyl-3 methyl-piperazin- -yl)m-2-methyl-butyramideMS(m/e):t581.5(MH) (or 10 diastereoisomer) WO 2008/151969 PCT/EP2008/056878 - 69 O N CI CI The title compounds were isolated from N-(3,4-dichloro-benzyl)-2-(3,4-dichloro phenyl) -4-((R) -4-methanesulfonyl-3-methyl-piperazin- l-yl) -2-methyl-butyramide (example 42) through column chromatography on chiral phase. 5 In analogy to the procedure described for the synthesis of N-(4-chloro-benzyl)-2-(3,4 dichloro-phenyl)-4-(4-methanesulfonyl-piperazin-1-yl)-N-methyl-butyramide (example 1) further (homo)-piperazine derivatives have been synthesized from the starting materials listed in Table 3. Table 3 comprises examples 95-137. Table 3 MW No MW structure Systematic Name starting materials found MH+ 3/ 2-(3,4-Dichoro N e 4phenyl)-4-(4 F 2-(3,4-Dichioro- methanesulfonyl F phenyl)-N-(3-fluoro- [1,4]diazepan--yl) 9 5 F 4-trifluoromethyl- 2-methyl-butyric 9/ F benzyl)-4-(4- acid (intermediate 5) 598.3 methanesulfonyl- and 3-Fluoro-4 HN [1,4]diazepan-[-yl)-2- trifluoromethyl CI methyl-butyramide benzylamine (commercially available) 2-/ 2-(3,4-Dichloro -S N h )phenyl)-4-(4 F 2-(3,4-Dichloro- methanesulfonyl F phenyl)-4-(4- [1,4diazepan-1-yl) 96545 1 - F methanesulfonyl- 2-methyl-butyric 96 59.5 ~ 0 [1,4] diazepan- l-yl) - acid (intermediate 5) 594.3 C1 / ~ 2,N-dimethyl-N-(4- and Methyl-(4 trifluoromethyl- trifluoromethyl ci / benzyl)-butyramide benzyl)-amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 70 MW No MW structure Systematic Name starting materials found MH+ o / N /02-(3,4-Dichloro N-(4-Chloro-benzyl)- phenyl) -4- (4 2-(,-ihoo methanesulfonyl N 2(3,-dihloo- [1,4] diazepan- l-yl) 97 561. ~ / \phenyl)-4-(4- 2-methyl-butyric 56. 97 561.0 methanesulfonyl- acid (intermediate 5) 62.2 / _ [1,4]diazepan-1-yl)- ad(-hoo e /2,N-dimethyl- and (4-Chloro butyramide benzyl)-methyl / by iamine(commercially available) o"/ o S / 2- (3,4-Dichioro / *0 / N phenyl) -4- (4 N-(4-Chloro-3-fluoro- methanesulfonyl N benzyl)-2-(3,4- 1,4]diazepan-1-yl) 98 564.9 dichloro-phenyl) -4- (4- 2-methyl-butyric 566.3 o F methanesulfonyl- acid (intermediate 5) Ci [1,4]diazepan-1-yl)-2- and 3-Chloro-4 HN methyl-butyramide fluoro-benzylamine CI (commercially available) 2-(3,4-Dichloro phenyl)-4-(4 2- (3,4-Dichloro- methanesulfonyl /1 \ phenyl)-4-(4- [1,4]diazepan-1-yl) C HN, methanesulfonyl- 2-methyl-butyric 99 596.5 [1 1,4] diazepan- Il-yl) -2- acid (intermediate 5) 596.2 methyl-N-h(4- and 4 F! trifluoromethoxy- Trifluoromethoxy fF benzyl)u-butyramide benzylamine (commercially available) 2-4 c 2-(3,4-Dichloro N 2-(3,4-Dichloro- phenyl)-4-(4 phenyl)-N-(3-fluoro- methanesulfonyl N ) F b4[1,4]diazepan-1-yl) 100 544.5 0 ~~~~methysl-oN-( inemdit ) 4. 10 544.5l)-44 2-methyl-butyric /\acid (intermediate 5) 59. / \ __ [1,4]diazepan-i-yl)T- and (3-Fluoro benzyl)-bumtyaid benzylamieth p1 butyramide amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 71 MW No MW structure Systematic Name starting materials found MH+ -/ 2-(3,4-Dichoro N /phenyl)-4-(4 2-(3,4-Dichioro- methanesulfonyl 0 ) phenyl)-4-(4- [1,4ldiazepan-1-yl) NF methanesulfonyl- 2-methyl-butyric 101 594.5 0 F [1,4]diazepan-1-yl)- acid (intermediate 5) 594.3 Fj /N 2,N-dimethyl-N-(3- and Methyl- (3 trifluoromethyl- trifluoromethyl benzyl) -butyramide benzyl) -amine (commercially available) 0-/ 2-(3,4-Dichloro phenyl)-4-(4 2- (3,4-Dichloro- methanesulfonyl phenyl)-4-(4- [1,4]diazepan-1-yl) 0 methanesulfonyl- 2-methyl-butyric 0 5[1,4]diazepan-l-yl)-2- acid (intermediate 5) 596.2 HNF methyl-N-(3- and 3 / \ t F trifluoromethoxy- Trifluoromethoxy benzyl)-butyramide benzylamine (commercially available) 2 / 2-(3,4-Dichloro -N phenyl)-4-(4 -(3-Chloro - methanesulfonyl N 2-3, -4-cor[1,4]diazepan-1-yl) 103 561.0 metheylN(4 2-methyl-butyric 5622 0 / 1 [1amethanulfonylm- acid (intermediate 5) / -1,dieayl4- and (3-Chloro en butyramide benzyl)-methyl amine (commercially available) 0o/ ?2 h 2-(3,4-Dichloro c N)pphenyl)- (4 N 2-3,4-ichro-methanesulfonyl 0 Hh l -[1,4]diazepan-1-yl) -eyl- 2-methyl-butyric 104 574.5 - 7 (4-methanesulfonyl- acid (intermediate 5) 574.3 / \ F [1,4[diazepan-1-yl)- and (3-Fluoro-4 2,N-dimethyl- methoxy-benzyl) /0 butyramide methyl-amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 72 MW No MW structure Systematic Name starting materials found MH+ / S- 2- (3,4-Dichioro N Ophenyl)-4-(4 N-[Cyclopropyl-(4 methoxy-phenyl)- 1,4ldiazepan-1-yl) methyl]-2-(3,4- 2-methyl-butyric 105 582.6 C1 0 \ihoo-h l 04 (4- acid (intermediate 5) 584.1 HN ~dichloro-phenyl)-4-(4- adCCcorpl HN methanesulfonyl [1,4]diazepan-1-yl)-2- C-(4-methoxy methyl-butyramide phenyl) methylamine (commercially available) 0- / N-- 2- (3,4-Dichloro 2-(3,4-Dichloro- phenyl)-4-(4 NC m methanesulfonyl phenyril)-N-(4-flr- [1,4ldiazepan-1-yl) 16 6/ benzyl)-4-(4- 2-methyl-butyric 10 F1.5' methanesulfonyl- acid (intermediate 5) 612.1 F Ny and (4-Fluoro-3 / ~ F [1,ldizea1yl- trifluoromethyl FNdietym benzyl)-methyl butyramide amine (commercially available) 0*/ N2 2-(3,4-Dichloro phenyl)-4-(4 N-(3,5-Bis- methanesulfonyl F trifluoromethyl- [1,4diazepan-1-yl) benzyl)-2-(3,4- 2-methyl-butyric 107 648.5 NHN dichloro-phenyl) -4-p(4- acid (intermediate 5) 648.2 mmethanesulfonyl- and 3,5-Bis F F [1,4]diazepan-1-yl)-2- trifluoromethyl F methyl-butyramide benzylamine commercially available) h 2- (3,4-Dichloro C0 phenyl) -4- (4 N 2- (3,4-Dichloro- methanesulfonyl Ij0phenyl)-N-(4- [1,4ldiazepan-1-yl) ci / ' difluoromethoxy-3- 2-methyl-butyric 108 622.6 - /N / methoxy-benzl)-4-(4- acid (intermediate 5) 62. bmethanesulfonyl- and (4 [1,4] diazepan- 1-yl) - Difluoromethoxy-3 FF2,N-dimethyl- methoxy-benzyl) Fbutyramide methyl-amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 73 MW No MW structure Systematic Name starting materials found MH+ 0- / 2-(3,4-Dichloro QN 2-(3,4-Dichloro- phenyl)-4-(4 phenyl)-4-(4- methanesulfonyl methanesulfonyl- [1,4]diazepan-1-yl) 109 540.6 Ci [1,4]diazepan-1-yl)- 2-methyl-butyric 540.3 2,N-dimethyl-N-(4- acid (intermediate 5) methyl-benzyl)- and Methyl-(4 butyramide methyl-benzyl) amine (commercially available) 0-/ N' 2-(3,4-Dichloro phenyl)-4-(4 0 2-(3,4-Dichloro- methanesulfonyl phenyl)-N-(4- [1,4]diazepan-1-yl) 0 5dimethylamino- 2-methyl-butyric 110 555.6 HN benzyl)-4-(4- acid (intermediate 5) 555.3 methanesulfonyl- and (4 [1,4]diazepan-1-yl)-2- Aminomethyl methyl-butyramide phenyl)-dimethyl amine (commercially available) 0- / N-- 2- (3,4-Dichloro N-(4-Chloro-3- phenyl)-4-(4 N) trifluoromethyl- methanesulfonyl benzyl)-2-(3,4- [1,4ldiazepan-1-yl) 111 629.0 0 / ~ dichloro-phenyl)-4-(4- 2-methyl-butyric methanesulfonyl- acid (intermediate 5) 630.2 F [1,4]diazepan-1-yl)- and (4-Chloro-3 / " F [1,ldizea1yl- trifluoromethyl 2,N-dimethyl-benzyl)-methyl C1butyramide amine (commercially available) 0-/ 2-(3,4-Dichloro phenyl)-4-(4 0 2- (3,4-Dichloro- methanesulfonyl phenyl) -N- (3-fluoro- [1,4]diazepan-1-yl) 4-trifluoromethyl- 2-methyl-butyric 112 612.5 benzyl)-4-(4- acid (intermediate 5) 630.2 / F methanesulfonyl- and (3-Fluoro-4 - F [1,4]diazepan-1-yl)- trifluoromethyl F 2,N-dimethyl- benzyl) F butyramide -methyl-amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 74 MW No MW structure Systematic Name starting materials found MH+ 2-(3,4-Dichloro N) N-(3,4-Dichloro- phenyl)4(4 Nbenzyl)-2- (3,4 methanesulfonyl C dichloro-phenyl)-4-(4- [1,4]diazepan-1-yl) 113 595.4 di / \h p nyl- 2-methyl-butyric 596.2 11-3 9.- methanesulfonyl- acid (intermediate 5) [1,4]diazepan-1-yl)- and (3,4-Dichloro S 2,N-dimethyl- benzyl)-methyl Cbutyramide amine (commercially available) 0-/ CN N 2--(3,4-Dichloro dichlorh-pheny-)-4-4 N) N (34-Dchro-methanesulfonyl benzyl)-2-(3,4- [1,4diazepan-1-yl) 114 581.4 I /0~ o dichloro-phenyl) -4- (4- 2-methyl-butyric 5822 HN-? methanesulfonyl- acid (intermediate 5) [1,4] diazepan- l-yl) -2- and 3,4-Dichloro methyl-butyramide benzylamine (commercially available) 02( h 2-(3,4-Dichloro b lp h e n y l) -4-(4 2-(3,4-Dichloro- methanesulfonyl N phenyl)-N-(3- 1,4]diazepan--yl) 15 5/ difluoromethoxy- 2-methyl-butyric benzyl)-4-(4- acid (intermediate 5) 578.5 S HNm methanesulfonyl- and 3 0 [1,4] diazepan- [-yl) -2- Difluoromethoxy methyl-butyramide benzylamine (commercially available) 0- / 2 O 2-(3,4-Dichloro CN) phenyl) -4- (4 N)2- (3,4-Dichloro- methanesulfonyl phenyl)-N-(5-fluoro- [1,4]diazepan-1-yl) 116 598.5 ~ / ~ F 2-trifluoromethyl- 2-methyl-butyric 116-598. H N_ benzyl)-4-(4- acid (intermediate 5) methanesulfonyl- and 5-Fluoro-2 [1,4]diazepan-1-yl)-2- trifluoromethyl F methyl-butyramide benzylamine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 75 MW No MW structure Systematic Name starting materials found MH+ 0- / 3o 2-(3,4-Dichoro phenyl)-4-(4 0 2-(3,4-Dichioro- methanesulfonyl phenyl)-4-(4- [1,4]diazepan-1-yl) C1methanesulfonyl- 2-methyl-butyric 117 580.5 - HN- [1,4] diazepan-1I-yl) -2- acid (intermediate 5) 580.1 methyl-N-(4- and 4 F trifluoromethyl- Trifluoromethyl F benzyl)-butyramide benzylamine F (commercially available) 0*/ N P_-2-(3,4-Dichloro phenyl)-4-(4 0 2- (3,4-Dichloro- methanesulfonyl phenyl)-N-(2-fluoro- [1,4]diazepan-1-yl) 5-trifluoromethyl- 2-methyl-butyric 118 598.5 - HN- F benzyl)-4-(4- acid (intermediate 5) 598.3 \methanesulfonyl- and 2-Fluoro-5 [1,4]diazepan-1-yl)-2- trifluoromethyl F methyl-butyramide benzylamine (commercially available) o2--(3,4-Dichloro Sphenyl)n-4-z(4 N-[1-(4-Chloro- methanesulfonyl N phenyl) -ethyl] -2- (3,4- [1,4]diazepan-1-yl) 119 561.0 ~ dichloro-phenyl) -4- (4- 2-methyl-butyric 560.3 0 / ~ methanesulfonyl- acid (intermediate 5) [ \- [1,4]diazepan-1 -yl)[-2- and 1-(4-Chloro HN methyl-butyramide phenyl)-ethylamine (commercially available) 2- (3,4-Dichloro N C ) 2-(3,4-Dichloro- phenyl)-4-(4 phenyl)-4-(4- methanesulfonyl ci methanesulfonyl- [1,4]diazepan-1-yl) 120 556.6 0 [1,4] diazepan- 1-yl) -N- 2-methyl-butyric 556.2 / p (3-methoxy-benzyl)- acid (intermediate 5) /t and (3-Methoxy h/ 2,N-dimethyl- benzyl)-methyl 0 butyramide amine (commercially available) WO 2008/151969 PCT/EP2008/056878 - 76 MW No MW structure Systematic Name starting materials found MH+ 0/ sN 2-(3,4-Dichloro N-(2-Chloro-benzyl)- phenyl) -4- (4 N2- (3,4-dichioro- methanesulfonyl c phenyl)4-(4- [1,4]diazepan-1-yl) 121 561.0 0 methanesulfonyl- 2-methyl-butyric 560.3 I [1,4] diazepan- l-yl) - acid (intermediate 5) 6. N [,]dize yl- and (2-Chloro / 2,N-dimethyl- benzyl)-methyl butyramide amine (commercially available) 0-/ 2- (3,4-Dichloro o7 / N0 2-(2AY-ichk1 phenyl)-4-(4 N) zl-kJ -I-ior- methanesulfonyl dihoopey) [1,4]diazepan-1-yl) 1225 C - ehl] 4(4 2-methyl-butyric596.3 12 595/4methnesulfonyl acid (intermediate 5) 59. ci~ [14 dean- 1 -oyl-- and 1- (3,4-Dichloro HNb m14 eth 1- ymide phenyl) -ethylamine HN- ethl-buyraide (commercially available) i2--(3,4-Dichloro Q 2-(3,4-Dichloro- phenyl)-4-(4 o phenyl) 4-(4- methanesulfonyl S/ I 0 methanesulfonyl- [1,4]diazepan-1-yl) 123 603.6 -1,4]) 2-methyl-butyric 603.2 S[,4]diazepanl-1-y- acid (intermediate 5) / \ Ndimtyl-en- (4 - hand Methyl-(4 y-butyramide pyridin-4-yl-benzyl) bu d amine (commercially available) 0o/ N P--2-(3,4-Dichloro 2(,Dcoophenyl)-4-(4 0 N-p(4-Cyano-benzyl)- methanesulfonyl 2-s(3,4-dichloro- [1,4]diazepan-1-yl) 124 537.5 [1/d\ phenyl)-4-(4- 2-methyl-butyric 637.2 S-methanesulfonyl- acid (intermediate 5) r1,4] diazepan- 1 -yl) -2- and 4-Aminomethyl -methyl-butyramide benzonitrile (commercially N available) WO 2008/151969 PCT/EP2008/056878 - 77 MW No MW structure Systematic Name starting materials found MH+ 0-/ l2-o(3,4-Dichoro phenyl)-4-(4 N 2-(3,4-Dichioro- methanesulfonyl 0 phenyl)-4-(4- [1,4diazepan-1-yl) C1methanesulfonyl- 2-methyl-butyric 125 595. HN- [1,4ldiazepan-1-yl)- acid (intermediate 5) 59. _ / 2,N-dimethyl-N-(6- and C-(6 N trifluoromethyl- Trifluoromethyl F pyridin-3-ylmethyl)- pyridin-3-yl) Fbutyramide methylamine (commercially available) ?/ 2-(3,4-Dichloro N. phenyl)-4-(4 methanesulfonyl 2 -(,4-Dichaorohenyl) [1,4]diazepan-1-yl)-2 12681.50 ,4(4mehan yl2- methyl-butyric acid 1[ epanl--y-2- intermediatee) and 581 methyl--(6 - G-(6-Trifluoromethyl / trilormethyl-yridn- pyridin-3-yl) N ty ramide methylamine F (commercially available) 2-(3,4-Dic2loro phenyl) -4-(4 0= 0 2-(3,4-Dichloro- methanesulfonyl N phenyl)-4-(4- piperazin--yl)-2 ( methanesulfonyl- methyl-butyric acid 127 580.5 KN> piperazin-1-yl)-2,N- (intermediate 2) and 580.2 F dimethyl-N-(3- Methyl-(3 ~ / ~ 0 / F trifluoromethyl-benzyl)- trifluoromethyl F butyramide benzyl)-amine N (commercially CI / available) 2-(3,4-Dichloro (R or S) -2-(3,4- phenyl)-4-(4 O H methanesulfonyl [ dpiperazin-1-yl)-2 methyl-butyric acid H 5(intermediate 2) and 581 cj_,5 C-(-Tiflormethansloyl- )2Aio2 piperazin-1-yl)-2-in- - N N-S mtv-utrmd phenyl-ethanol N1 F1 methylaminemi 0 (commercially available) WO 2008/151969 PCT/EP2008/056878 - 78 MW No MW structure Systematic Name starting materials found MH+ 2-(3,4-Dichloro (S or R)-2-(3,4- phenyl)-4-(4 Dichloro-phenyl)-N- methanesulfonyl OH ((R)-2-hydroxy--in-1-yl)-2 129 58.5 -((R)--hydrxy-1- methyl-butyric acid 52. 029 NH8.5 phenyl-ethyl)-4-(4- (intermediate 2) and cj_'5:]; /_\ 0 methanesulfonyl- ()2Aio2 piperazin-1-yl)-2- (R)-2-ano 1 N N-S -m ethyl-butyram ide phe ymetha l available) 2-(3,4-Dichloro I1 N-[(R)-1-(4-Ghloro- phenyl)-4-(4 methanesulfonyl H ethyl-2-,4-dcro- piperazin-1-yl)-2 ethl,-2-3,-di~oo- methyl-butyric acid 523 130 562.9 C10phenyl)-4-(4- (nme-btric aid 564.3 m intermediate 2) and ' (R)-2-Amino-2-(4 methyl-butyramide chloro-phenyl) -ethanol (commercially available) 2-(3,4-Dichloro HO CI N-[(S)-i-(4-Chloro- phenyl)-4-(4 phenyl)-2-hydroxy- methanesulfonyl O NHethyl]-2-(3,4-dichloro- piperazin-1-yl)-2 131 562.9 phenyl)-4-(4- 564.3 ciNvN mthnsufoy (intermediate 2) and 11 methanesulfonyl N N--(S) -2-Amino-2-(4 C1 11 piperazin-1-yl)-2 0 methyl -butyramide chloro-phenyl) -ethanol (commercially available) 2-(3,4-Dichloro F 2-(3,4-Dichloro- phenyl)-4-(4 phenyl) -N- [(R)-1(4- methanesulfonyl piperazin-1-yl)-2 5HO N fluoro-phenyl)-2- methyl-butyric acid 543 hydroxy-ethyl] -4-(4- (intermediate 2) and ' methanesulfonyl- (R)-2-Amino-2-(4 ci / ~ ~ ~ 1 piperazin-1-yl) -2- ()2Aio2j -N N-S -ei fluoro-phenyl)-ethanol C1 11 methyl-butyramide 0 I(commercially available) 2-(3,4-DicN-oro F 2-(3,4-Dichloro- phenyl)-4-(4 phenyl)-N-[(S)-1-(4- methanesulfonyl opiperazin-1-yl)-2 133 546.5 hyd'C Yroy-ehyl--(4- methyl-butyric acid Nh (intermediate 2) and methanesulfonyl 11 / "" p piperazin-1-yl)-2- (5) -2-mno-2-n - N N~ mehvl-btvraide loro-phenyl) -ethanol N \ N-S- methyl-butyramide c1 _ 110 (commercially available) WO 2008/151969 PCT/EP2008/056878 - 79 MW No MW structure Systematic Name starting materials found MH+ 2-(3,4-Dic2Doro F phenyl)-4-(4 2-(3,4-Dichloro- methanesulfonyl phenyl) -N- [1-(4-fluoro- piperazin--yl)-2 oi -- /H 134 530.5 phenyl) -ethyl] -4-(4- methyl-butyric acid 530.3 methanesulfonyl- (intermediate 2) and NN-S piperazin-1-yl)-2- 1-(4-Fluoro-phenyl) methyl-butyramide ethylamine (commercially available) 2-(3,4-Dic2Doro 2-(3,4-Dichloro- phenyl) -4-(4 F ~ F phenyl)-4-(4 meethanesulfonyl methanesulfonyl- piperazin-1-yl)-2 F pierazn- 1-yl)-2- methyl-butyric acid 135 584.5 o NHeai-1y)2 (intermediate 2) and 584.1 methyl-N-[2,2,2- 2,2,2lrifluorol(4 Strifluoro--(4-fluoro- fluoro-phenyl) c N N-S- phenyl) -ethyl] C1 11butyramide 0I IIyamd (commercially available) 2-(3,4-Dichloro phenyl)-4-(4,-dioxo C" W H N-[(R)-1-(4-Ghloro- hexahydro phenyl) -2-hydroxy- 11ambda*6*thia5,7a 13670ethyl] -2-(3,4-dichoro- diaza-inden-5-yl)-2 136 5o phenyl)-4-(1,1-dioxo- methyl-butyric 574.1 /\ hexahydro- 1-thia-5,7a- acid(intermediate 6) diaza-inden-5-yl)-2- and (R)o-2-Amino-2-(4 methyl-butyramide chloro-phenyl) -ethanol (commercially available) 2N-3,4-Dichloro e2-(3,4-Dichloro- phenyl)-4-(1,1-dioxo phenyl)-4-(1,1-dioxo- 1abahi57a N hexahydro-12-thia-5,7a- da-inde -5) diz-ne-l--diaza-inden-5-yl)-2 137 558.5 c Hdaaidn5y)--methyl-butyric 558 [(2-(3,4-Dichloro / \ [R)--(4flrop- acid(intermediate 6) phyl) -2-hyox- and (R)-2-Amino-2-(4 ethyl-butyramide fluoro-phenyl) -ethanol (commercially available)

Claims

1. A compound of formula IA or IB 2 N 10 " 2 'S (R )m R N j R (R )m R N Re-N 0 R-N 0 3 %3 R IAor R IB 5 wherein R I is hydrogen or lower alkyl; R2 is hydrogen, fluoro, hydroxy or lower alkyl; R 3 is hydrogen or lower alkyl; R4 is -CHR 5 -A 10 R is hydrogen, lower alkyl, fluoro, CF 3 , CH 2 OH or cycloalkyl; A is aryl or heteroaryl, which rings are unsubstituted or substituted by (R 6 ) 0 ; R6 may be the same or not when o is more than one, and is heteroaryl, lower alkyl, lower alkoxy, cyano, halogen, lower alkyl substituted by halogen, lower alkoxy substituted by halogen or NR 7 R 8 ; 15 0 is 1, 2 or 3; R 7 , R 8 are independently hydrogen or lower alkyl; R 9 is lower alkyl; R 1 is lower alkyl, lower alkoxy or halogen; n is 1 or 2; 20 m is 1 or 2; or a pharmaceutically suitable acid addition salt thereof.

2. A compound of formula IA-I according to claim 1 CI 0 ciS CI 2 N \\ N R R N 0 R4 IA-I wherein 25 R 1 is hydrogen or lower alkyl; R2 is hydrogen, fluoro or lower alkyl; R 3 is hydrogen or lower alkyl; WO 2008/151969 PCT/EP2008/056878 - 81 R4 is -CHR-A R 5 is hydrogen, lower alkyl, fluoro, CF 3 , CH 2 OH or cycloalkyl; A is aryl or heteroaryl, which rings are unsubstituted or substituted by (R 6 ),; R6 may be the same or not when o is more than one, and is heteroaryl, lower 5 alkyl, lower alkoxy, cyano, halogen, lower alkyl substituted by halogen, lower alkoxy substituted by halogen or NR Re; o is 1, 2 or 3; R 7 , R 8 are independently hydrogen or lower alkyl; and n is 1 or 2; 10 or a pharmaceutically suitable acid addition salt thereof.

3. A compound of formula IA according to claim 1, wherein n is 1.

4. A compound of formula IA according to claim 3, wherein R 2 is lower alkyl.

5. The compound according to claim 4, wherein R 3 is hydrogen or lower alkyl and R 4 is -CHR 5 -A. 15

6. The compound according to claim 5, wherein A is an optionally substituted phenyl.

7. The compound according to claim 6, wherein the compound is N-(4-chloro-benzyl) -2-(3,4-dichloro-phenyl) -4-(4-methanesulfonyl-piperazin- 1 -yl) 2,N-dimethyl-butyramide, 20 2-(3,4-dichloro-phenyl) -N-(3-fluoro-4-trifluoromethyl-benzyl) -4-(4-methanesulfonyl piperazin- 1 -yl) -2-methyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 -yl) -2,N-dimethyl-N- (4 25 methyl-benzyl) -butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 -yl) -2-methyl-N- (4 trifluoromethyl-benzyl) -butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 -yl) -2,N-dimethyl-N- (4 trifluoromethyl-benzyl) -butyramide, 30 N- (4-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1 -yl) -2 methyl-butyramide, N- [cyclopropyl- (4-methoxy-phenyl) -methyl] -2- (3,4-dichloro-phenyl) -4- ((R) -4 methanesulfonyl-3 -methyl-piperazin- 1 -yl) -2-methyl-butyramide, WO 2008/151969 PCT/EP2008/056878 -82 2- (3,4-dichloro-phenyl) -N- (4-fluoro-3-trifluoromethyl-benzyl) -4- ((R) -4 methanesulfonyl-3-methyl-piperazin- 1-yl) -2,N-dimethyl-butyramide, N- (3,5-bis-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl 3-methyl-piperazin- 1-yl) -2-methyl-butyramide, 5 2-(3,4-dichloro-phenyl) -4-((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2,N dimethyl-N- (4-methyl-benzyl) -butyramide, N- (4-chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4 methanesulfonyl-3 -methyl-piperazin- 1-yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (3-fluoro-4-trifluoromethyl-benzyl) -4- ((R) -4 10 methanesulfonyl-3 -methyl-piperazin- 1-yl) -2,N-dimethyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- 1-yl) -2,N-dimethyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- 1-yl) -2-methyl-butyramide, 15 2- (3,4-dichloro-phenyl) -N- (3-difluoromethoxy-benzyl) -4- ((R) -4-methanesulfonyl-3 methyl-piperazin- 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2-methyl N- (4-trifluoromethyl-benzyl) -butyramide, 2- (3,4-dichloro-phenyl) -N- (2-fluoro-5-trifluoromethyl-benzyl) -4- ((R) -4 20 methanesulfonyl-3 -methyl-piperazin- 1-yl) -2-methyl-butyramide, N-[I- (4-chloro-phenyl) -ethyl] -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3 methyl-piperazin- 1-yl) -2-methyl-butyramide, N- (2-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- 1-yl) -2,N-dimethyl-butyramide, 25 2- (3,4-dichloro-phenyl) -N-[I- (3,4-dichloro-phenyl) -ethyl] -4- ((R) -4-methanesulfonyl 3-methyl-piperazin- 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2-methyl N- (3-trifluoromethoxy-benzyl) -butyramide, N- (4-chloro-3-fluoro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3 30 methyl-piperazin- 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2-methyl N- (4-trifluoromethoxy-benzyl) -butyramide, N- (4-chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4 methanesulfonyl-3 -methyl-piperazin- 1-yl) -2-methyl-butyramide, 35 2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2,N dimethyl-N- (4-trifluoromethyl-benzyl) -butyramide, WO 2008/151969 PCT/EP2008/056878 -83 N- (4-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl piperazin- 1-yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2,N dimethyl-N- (3-trifluoromethyl-benzyl) -butyramide, 5 N- [cyclopropyl- (4-methoxy-phenyl) -methyl] -2- (3,4-dichloro-phenyl) -4- ((S) -4 methanesulfonyl-3-methyl-piperazin- 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (4-fluoro-3-trifluoromethyl-benzyl) -4- ((S) -4 methanesulfonyl-3-methyl-piperazin- 1-yl) -2,N-dimethyl-butyramide, N- (3,5-bis-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl 10 3-methyl-piperazin- 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2,N dimethyl-N- (4-methyl-benzyl) -butyramide, N- (4-chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4 methanesulfonyl-3 -methyl-piperazin- 1-yl) -2,N-dimethyl-butyramide, 15 2- (3,4-dichloro-phenyl) -N- (3-fluoro-4-trifluoromethyl-benzyl) -4- ((S) -4 methanesulfonyl-3 -methyl-piperazin- 1-yl) -2,N-dimethyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl piperazin- 1-yl) -2,N-dimethyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl 20 piperazin- 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2-methyl N- (4-trifluoromethyl-benzyl) -butyramide, N-[1- (4-chloro-phenyl) -ethyl] -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3 methyl-piperazin- 1 -yl) -2-methyl-butyramide, 25 2- (3,4-dichloro-phenyl) -N-[1- (3,4-dichloro-phenyl) -ethyl] -4- ((S) -4-methanesulfonyl 3-methyl-piperazin- 1 -yl) -2-methyl-butyramide, N- (4-chloro-3-fluoro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3 methyl-piperazin- 1 -yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl-piperazin- 1 -yl) -2-methyl 30 N- (4-trifluoromethoxy-benzyl) -butyramide, N- (4-chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4 methanesulfonyl-3 -methyl-piperazin- 1 -yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl-piperazin- 1 -yl) -2,N dimethyl-N- (4-trifluoromethyl-benzyl) -butyramide, 35 N- (4-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((S) -4-methanesulfonyl-3-methyl piperazin- 1 -yl) -2,N-dimethyl-butyramide, WO 2008/151969 PCT/EP2008/056878 - 84 2-(3,4-dichloro-phenyl) -4-((S) -4-methanesulfonyl-3-methyl-piperazin- 1-yl) -2,N dimethyl-N- (3-trifluoromethyl-benzyl) -butyramide, (S) -N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3 methyl-piperazin- 1-yl) -2-methyl-butyramide, 5 (R) -N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- ((R) -4-methanesulfonyl-3 methyl-piperazin- 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl-piperazin- 1-yl) -2,N-dimethyl-N- (3 trifluoromethyl-benzyl) -butyramide, (R or S) -2- (3,4-dichloro-phenyl) -N- ((R) -2-hydroxy- 1 -phenyl-ethyl) -4- (4 10 methanesulfonyl-piperazin-1-yl)-2-methyl-butyramide or N- [(R) -1- (4-chloro-phenyl) -2-hydroxy-ethyl] -2- (3,4-dichloro-phenyl) -4- (4 methanesulfonyl-piperazin- 1-yl) -2-methyl-butyramide.

8. The compound of formula IA according to claim 1, wherein n is 2.

9. The compound of formula IA according to claim 8, wherein the compound is 15 2-(3,4-dichloro-phenyl)-N-(3-fluoro-4-trifluoromethyl-benzyl)-4-(4-methanesulfonyl [1,4]diazepan-1-yl)-2-methyl-butyramide, 2-(3,4-dichloro-phenyl)-4-(4-methanesulfonyl- [1,4] diazepan- 1-yl)-2,N-dimethyl-N-(4 trifluoromethyl-benzyl) -butyramide, N- (4-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 20 yl) -2,N-dimethyl-butyramide, N- (4-chloro-3-fluoro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl [1,4]diazepan-1-yl)-2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (3-fluoro-benzyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 yl) -2,N-dimethyl-butyramide, 25 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl-N- (3 trifluoromethyl-benzyl) -butyramide, N- (3-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (3-fluoro-4-methoxy-benzyl) -4- (4-methanesulfonyl 30 [1,4] diazepan- 1-yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (4-fluoro-3-trifluoromethyl-benzyl) -4- (4-methanesulfonyl [1,4] diazepan- 1-yl) -2,N-dimethyl-butyramide, 2- (3,4-dichloro-phenyl) -N- (4-difluoromethoxy-3-methoxy-benzyl) -4- (4 methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl-butyramide, WO 2008/151969 PCT/EP2008/056878 - 85 2-(3,4-dichloro-phenyl) -4-(4-methanesulfonyl- [1,4] diazepan- 1-yl) -2,N-dimethyl-N-(4 methyl-benzyl) -butyramide, N- (4-chloro-3-trifluoromethyl-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl [1,4] diazepan- 1-yl) -2,N-dimethyl-butyramide, 5 2- (3,4-dichloro-phenyl) -N- (3-fluoro-4-trifluoromethyl-benzyl) -4- (4-methanesulfonyl [1,4] diazepan- 1-yl) -2,N-dimethyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 1-yl) -2,N-dimethyl-butyramide, N- (3,4-dichloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan 10 1-yl) -2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1-yl) -2-methyl-N- (4 trifluoromethyl-benzyl) -butyramide, N- (2-chloro-benzyl) -2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 yl) -2,N-dimethyl-butyramide, 15 2- (3,4-dichloro-phenyl) -N- [1- (3,4-dichloro-phenyl) -ethyl] -4- (4-methanesulfonyl [1,4]diazepan-1-yl)-2-methyl-butyramide, 2- (3,4-dichloro-phenyl) -4- (4-methanesulfonyl- [1,4] diazepan- 1 -yl) -2,N-dimethyl-N- (4 pyridin-4-yl-benzyl) -butyramide.

10. A compound of formula IB according to claim 1, wherein n is 1, R 2 is lower 20 alkyl, R 3 is hydrogen or lower alkyl and R 4 is -CHR 5 -A.

11. A compound of formula IB according to claim 10, wherein A is an optionally substituted phenyl.

12. A compound of formula IB according to claim 11, wherein the compound is N- [(R) -1-(4-chloro-phenyl) -2-hydroxy-ethyl] -2-(3,4-dichloro-phenyl) -4-(1,1 -dioxo 25 hexahydro-1 6 -thia-5,7a-diaza-inden-5-yl)-2-methyl-butyramide or 2-(3,4-dichloro-phenyl)-4-(1,1-dioxo-hexahydro-1X-thia-5,7a-diaza-inden-5-yl)-N [(R) -1- (4-fluoro-phenyl) -2-hydroxy-ethyl] -2-methyl-butyramide.

13. A process for preparation of a compound of formula IA or IB according to 30 claim 1, which process comprises - cleaving off the ester group from a compound of formula WO 2008/151969 PCT/EP2008/056878 - 86 10 2 ~N% 9 10 2N (R )m R N 71N, 71 N ,R i/ )( )n 0 0 0 0 IV A or IV B with aqueous bases and - converting the acid of formula R41 OgS 0 R4 O'Z O 1 0 N 2 N s 9 1o 2 N'S (R )M R N j R (R )m R N )n~ )n HO 0 VIII A HO 0 VIII B 5 with a respective amine of formula R3-N H Ix under coupling conditions to a compound of formula 1 0 "0 R O '0 ( 10 ) N R 2 R N'S 10 2 N' (R )M R 2 Nj R (R )m R N Re-N 0 Re-N 0 3 %3 R IA or R IB 10 wherein the substituents and n have same meanings as described in claim 1, and R' is an 0- protecting group and - if desired, converting the compounds obtained into pharmaceutically acceptable acid addition salts.

14. A compound of formula IA or IB according to claim 1, whenever prepared by 15 a process as claimed in claim 13 or by an equivalent method.

15. A medicament containing one or more compounds of formula IA or IB as claimed in any one of claims 1-12 and a pharmaceutically acceptable excipient. WO 2008/151969 PCT/EP2008/056878 - 87

16. A medicament according to claim 15 for the treatment of depression, pain, psychosis, Parkinson's disease, schizophrenia, anxiety or attention deficit hyperactivity disorder (ADHD).

17. The use of a compound as claimed in any one of claims 1-12 for the 5 manufacture of a medicament for the treatment of depression, pain, psychosis, Parkinson's disease, schizophrenia, anxiety or attention deficit hyperactivity disorder (ADHD).

18. The invention as herein before described.